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Sources: Business Models for Informal Township Enterprises (Deep Dive)

The thesis core. This is the intersection your research claims: business-model

theory applied to informal township enterprises. The claim that such applications

are "rare and practitioner-level" is tested here against a 17-strand OpenAlex deep

dive (2026-08-18, 356 unique candidates, see search-log.md Pass 2).

Every item below carries a verified DOI or OpenAlex link. The finding: the

intersection exists but is thin and uneven, which sharpens (not weakens) the gap.

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1. Business-model theory for low-income / BoP markets (closest scholarly stream)

The conceptual home of "business models where formal assumptions break down".

• Sanchez, P., & Ricart, J. E. (2010). Business model innovation and sources of value creation in low-income markets. European Management Review. https://doi.org/10.1057/emr.2010.16 — The anchor paper. Interactive business models for low-income markets; the most cited statement that BM design differs fundamentally at the BoP.
• Seelos, C., & Mair, J. (2007). Profitable Business Models and Market Creation in the Context of Deep Poverty. Academy of Management Perspectives. https://doi.org/10.5465/amp.2007.27895339 — How BMs create markets where formal infrastructure is absent.
• Yunus, M., Moingeon, B., & Lehmann-Ortega, L. (2010). Building Social Business Models: Lessons from the Grameen Experience. Long Range Planning. https://doi.org/10.1016/j.lrp.2009.12.005 — The social-business-model logic.
• Karnani, A. (2007). The Mirage of Marketing to the Bottom of the Pyramid. California Management Review. https://doi.org/10.2307/41166407 — The critical counter-position to the BoP optimism; essential balance.
• Prahalad, C. K. (2010). The Fortune at the Bottom of the Pyramid. REEN. https://doi.org/10.19177/reen.v1e220081-23 — The originating BoP thesis (and its critique, above).
• London, T., & Hart, S. L. (2011). Next Generation Business Strategies for the Base of the Pyramid. https://doi.org/10.5860/choice.48-6397 — The BoP-strategy book (new approaches for building mutual value).
• Nakata, C., & Weidner, K. (2011). Enhancing New Product Adoption at the Base of the Pyramid: A Contextualized Model. Journal of Product Innovation Management. https://doi.org/10.1111/j.1540-5885.2011.00876.x — BoP consumer behaviour; constraints on the value proposition.
• Business models to serve low-income consumers in emerging markets (2017). Marketing Theory. https://doi.org/10.1177/1470593117704262 — BM types for low-income consumers.
• Business model design at the base of the pyramid (2017). Journal of Cleaner Production. https://doi.org/10.1016/j.jclepro.2017.06.014 — Design dimensions of BoP BMs.
• Built to scale? How sustainable business models can better serve the base of the pyramid (2017). JCP. https://doi.org/10.1016/j.jclepro.2017.11.084 — Scaling BoP BMs.
• Cognitive Frames of Poverty and Tension Handling in Base-of-the-Pyramid Business Models (2020). Business & Society. https://doi.org/10.1177/0007650320975184 — How poverty frames shape BM design.
• Business model innovation in base of the pyramid markets (2017). Journal of Business Strategy. https://doi.org/10.1108/jbs-05-2016-0051 — Practitioner-facing BMI at the BoP.
• New perspectives on business model innovations in emerging markets (2019). Journal of the Academy of Marketing Science. https://doi.org/10.1007/s11747-019-00713-2 — A current review of BMI in emerging markets.
• Managing dual business models in emerging markets: an ambidexterity perspective (2015). R&D Management. https://doi.org/10.1111/radm.12151 — Running formal + informal-market BMs together.
• Corporate-NGO Collaboration: Co-creating New Business Models for Developing Markets (2009). Long Range Planning. https://doi.org/10.1016/j.lrp.2009.11.003 — Dahan, Doh, Oetzel & Yaziji; BM co-creation in developing markets.

2. Frugal innovation business models (how constraints become design inputs)

• Zeschky, M., Widenmayer, B., & Gassmann, O. (2011). Frugal Innovation in Emerging Markets. Research-Technology Management. https://doi.org/10.5437/08956308x5404007 — The origin framing.
• Weyrauch, T., & Herstatt, C. (2016). What is frugal innovation? Three defining criteria. Journal of Frugal Innovation. https://doi.org/10.1186/s40669-016-0005-y — Definitional anchor.
• Winterhalter, S., Zeschky, M. B., & Gassmann, O. (2017). Business Models for Frugal Innovation in Emerging Markets: The Case of the Medical Device Industry. Technovation. https://doi.org/10.1016/j.technovation.2017.07.002 — Frugal BMs specifically; the closest BM-level treatment of resource-constrained ventures.
• Business models for sustainable innovation – an empirical analysis of frugal products (2016). JCP. https://doi.org/10.1016/j.jclepro.2016.02.050 — Frugal products and their BM logic.
• Frugal innovation and sustainable business models (2021). Technology in Society. https://doi.org/10.1016/j.techsoc.2020.101508 — Frugal BM + sustainability link.
• Frugal Innovation: Conception, development, diffusion, and outcome (2020). JCP. https://doi.org/10.1016/j.jclepro.2020.121456 — Current review of the frugal stream.
• Frugal innovation enablers: a comprehensive framework (2020). International Journal of Innovation Science. https://doi.org/10.1108/ijis-10-2019-0099 — The enabler framework.
• Frugal Innovation in the Midst of Societal and Operational Pressures (2022). JCP. https://doi.org/10.1016/j.jclepro.2022.131308 — Recent pressure-based view.
• Pursuing Frugal Innovation for Sustainability at the Grassroots Level (2021). Management and Organization Review. https://doi.org/10.1017/mor.2020.53 — Grassroots frugal innovation.
• Crafting Sustainable Development Solutions: Frugal Innovations of Grassroots Entrepreneurs (2016). Sustainability. https://doi.org/10.3390/su8010051 — Grassroots entrepreneurs as frugal innovators.
• The nexus of artificial intelligence, frugal innovation and business model innovation (2024). JOItmC. https://doi.org/10.1016/j.joitmc.2024.100326 — The very latest linkage.
• The role of digital business transformation in frugal innovation and SMEs' resilience in emerging markets (2023). International Journal of Emerging Markets. https://doi.org/10.1108/ijoem-12-2022-1937 — Digital + frugal for SMEs.

3. Inclusive business models (the formal-sector embrace of the informal)

• Inclusive business — a business approach to development (2017). Current Opinion in Environmental Sustainability. https://doi.org/10.1016/j.cosust.2017.03.001 — The inclusive-business framing.
• Platform-based business model and entrepreneurs from Base of the Pyramid (2022). Technovation. https://doi.org/10.1016/j.technovation.2021.102451 — Platforms as inclusive-BM enablers.
• Frugal business model innovation in the Base of the Pyramid: The case of Philips Community Life Centres (2023). Technovation. https://doi.org/10.1016/j.technovation.2022.102675 — A named corporate frugal-BM case.
• Business models for mini-grid electricity in base of the pyramid markets (2016). Energy for Sustainable Development. https://doi.org/10.1016/j.esd.2015.12.002 — Sector-specific BoP BMs.
• A business model for success: Enterprises serving the base of the pyramid with off-grid solar (2016). Renewable and Sustainable Energy Reviews. https://doi.org/10.1016/j.rser.2016.11.179 — BoP BM success factors (energy).
• Business model innovation in the water sector in developing countries (2014). Science of the Total Environment. https://doi.org/10.1016/j.scitotenv.2014.02.046 — BoP BM innovation (water).
• Gender-inclusive business models in livestock value chains (2022). Frontiers in Sustainability. https://doi.org/10.3389/frsus.2022.958251 — Inclusive BM in value chains.

4. Informal-economy entrepreneurship (the framing literature)

The theoretical frame for why informal enterprises exist and how they differ.

• Webb, J. W., Bruton, G. D., Tihanyi, L., & Ireland, R. D. (2012). Research on entrepreneurship in the informal economy: Framing a research agenda. Journal of Business Venturing. https://doi.org/10.1016/j.jbusvent.2012.05.003 — The framing anchor for informal-enterprise research.
• Bruton, G. D., Ireland, R. D., & Ketchen, D. J. (2012). Toward a Research Agenda on the Informal Economy. Academy of Management Perspectives. https://doi.org/10.5465/amp.2012.0079 — The AMP agenda-setting piece.
• Godfrey, P. C. (2011). Toward a Theory of the Informal Economy. Academy of Management Annals. https://doi.org/10.5465/19416520.2011.585818 — The theory-building statement.
• Sutter, C., Bruton, G. D., & Chen, J. (2018). Entrepreneurship as a solution to extreme poverty: A review and future research directions. Journal of Business Venturing. https://doi.org/10.1016/j.jbusvent.2018.06.003 — The poverty-entrepreneurship review.
• The formal institutional context of informal entrepreneurship: A cross-national, configurational approach (2020). Research Policy. https://doi.org/10.1016/j.respol.2020.104160 — Institutions and informal entry.

5. Direct business-model applications to informal enterprises (the thin, direct evidence)

The papers that apply BM tools to informal-sector ventures. This stream is small,

recent, and not SA-township-specific — the heart of your gap.

• The business model canvas of women owned micro enterprises in the urban informal sector (2021). Journal of Enterprising Communities. https://doi.org/10.1108/jec-05-2021-0068 — The closest work to your thesis: an explicit BMC application to informal-sector micro-enterprises. Recent, low-cited, and not SA township retail.
• An Integrative Framework for Formal and Informal Entrepreneurship Research in Africa (2022). Journal of African Business. https://doi.org/10.1080/15228916.2022.2042102 — An Africa-specific formal/informal frame.
• How the social entrepreneurship business model designs in South Africa create value (2021). Journal of Entrepreneurship in Emerging Economies. https://doi.org/10.1108/jeee-02-2021-0057 — SA BM value creation (social enterprises, not township retail).
• The impact of Jabulani shopping mall on small township businesses and their response (2010). University of Pretoria. http://hdl.handle.net/2263/23427 — SA township businesses under formal-retail pressure (a thesis, method precedent).
• African Markets and the Utu-buntu Business Model (2019). African Minds. https://doi.org/10.47622/9781928331780 — An African, relational framing of business models; the cultural grounding angle.
• Barriers to e-commerce and competitive business models in developing countries (2007). Electronic Commerce Research and Applications. https://doi.org/10.1016/j.elerap.2007.02.004 — A developing-country BM study (early, e-commerce focus).
• How entrepreneurship ecosystem influences the development of frugal innovation and informal entrepreneurship (2020). Thunderbird International Business Review. https://doi.org/10.1002/tie.22157 — Links frugal innovation with informal entrepreneurship.

6. SA township empirical context (from Pass 1, cross-ref)

The descriptive base your thesis builds on and surpasses (full list with links in

sources-business-models.md §I): Charman, Petersen & Piper 2012 (spaza

transformation); Ligthelm 2005/2008; Terblanché 1991; Petersen & Charman 2017

(census); Mahajan 2014 (World Bank Diepsloot); Thompson 2015 (Somali migrant

enterprise); Wegerif 2020 (informal food traders under Covid).

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The refined gap (tested against this corpus)

Not "nothing exists". The precise statement, now evidenced:

1. Business-model theory for low-income markets exists as a conceptual stream

(Sanchez & Ricart 2010; frugal BMs; inclusive business), but it stays at the

market/market-segment level. It does **not descend to the individual informal

township enterprise** (the spaza, the street vendor, the home-based trader).

2. The only direct BM-framework application to informal-sector micro-enterprises

found is recent and isolated (JEC 2021, 16 citations), and it is not

SA-township-specific.

3. SA township business research is empirically rich but descriptive, not

business-model-theoretic. The SA BM work that exists is social-entrepreneurship

(JEEE 2021), not township retail.

4. The revenue-stream and value-capture assumptions in BM theory presume

formal payment channels and price-setting; cash-based, credit-trust, survivalist

township trade is unaddressed in the theory.

5. Practitioner-level applications (workshops, development-agency guides, inclusive-

business reports) are common, which matches the "practitioner-level" claim and

explains the scarcity of scholarly treatment.

Conceptual-grounding claim this thesis can make: the BMC and business-model

theory, adapted for cash-based, trust-mediated, survivalist township ventures, and

tested against township enterprise data, would occupy a genuinely thin cell:

business-model theory for the SA township informal retail unit.

Practitioner-level evidence (grey literature — next gathering action)

These are the "practitioner-level" applications the gap refers to. Not in

OpenAlex; gather as grey literature and file under 05-resources/:

• Inclusive-business reports (UNDP, IFC/World Bank)
• Township/spaza enterprise reports (Mastercard Foundation, SEDA, NYDA)
• The National Informal Business Upliftment Strategy (SA)
• Entrepreneurship-development workshop guides using the BMC in township settings

Next steps

1. Snowball citations from Sanchez & Ricart 2010 and the JEC 2021 BMC paper

(both directions) to close the direct-application stream.

2. Screen every source here into review-matrix.csv with taxonomy tags.

3. Verify DOIs on import to Zotero (anti-drift rule: never ship unverified).

4. Collect the grey literature above to document the "practitioner-level" half of

the gap with evidence, not assertion.