Framing: The Informal Economy as an Interconnected System of Business Models

Candidate thesis framing, tested against the captured corpus (Passes 1–4,

OpenAlex, ~1,200 candidates, 1,195 unique). This is conceptual grounding, not

proposal prose. Metadata note: year attributes come from OpenAlex and may be

online-first; confirm against each DOI at Zotero import (see

doi-verification.md).

1. The thesis, in one line

**The informal township economy can be read as an interconnected system of

business models — each venture (the vendor, the produce distributor, the water

distributor, the spaza, the transporter, the stokvel) is a distinct business

model, and they link through informal value chains, workaround networks, and

trust gatekeepers. Mapping how these business models work and how they link is

the conceptual grounding the formal sector cannot see.**

2. Why the example is the right unit of analysis

A street vegetable vendor sits at the end of two informal chains:

she buys produce from an informal produce distributor (a business model of

its own: bulk purchase, transport, spoilage risk, credit to the vendor);

she buys water in 25L buckets from an informal water distributor (another

business model: source, fill, deliver, collect).

Three distinct business models, mutually dependent. None of them appears in

formal distribution data. The vendor's business model only works because the

other two work. That is the unit of analysis: **a linked set of informal business

models**, not an isolated firm.

This reframes the earlier gap (business-model theory not applied to the township

retail unit) into a stronger claim: business-model theory, which analyses firms as

if they stand alone, needs an ecosystem reading to describe the informal

economy, where value chains, workarounds, and trust are the connective tissue.

3. The conceptual pillars (with the sources that anchor each)

Pillar	Anchor sources	Why it grounds the thesis
Business-model theory (value creation + capture)	Teece 2009; Zott, Amit & Massa 2011; Osterwalder & Pigneur 2010	The lens for each individual informal venture as a BM
Ecosystem theory	Jacobides, Cennamo & Gawer 2018 (Towards a theory of ecosystems, SMJ); Adner 2017 (Ecosystem as Structure, JOM); Granstrand & Holgersson 2019/2020 (Technovation)	The lens for how interdependent ventures co-create value — the "linked BMs" claim
BM interdependence / ecosystems broaden value creation	Jacobides 2018 (J. Organization Design); digital platform ecosystems (EM 2019)	BMs are not standalone; they live in ecosystems
Informal value chains & food systems	Petersen & Charman 2017 (township informal food census); township foodservice supply chain (2017); urban-food-system / informal-food literature	The informal chain is a real, mappable structure
The township empirical base (own research space)	4-Layer framework (nodes → workaround chains → gatekeepers → capital bridge); township retail ecology (Skhosana 2024); security dividend (Charman & Petersen 2022)	The hidden actors and links are already documented
The formal-entrant problem	Nanostore distribution stream (2017); Sekulula spaza-express (2014); SA spaza supply-chain papers (Pass 3)	Why the ecosystem view matters: a manufacturer must read the whole network, not one shop

4. What this framing enables

Research questions it supports (illustrative):

1. What are the distinct business models present in a township informal value

chain (e.g., produce: farm/wholesaler → distributor → vendor → consumer)?

2. How do these business models link — through what value flows, workarounds,

credit arrangements, and trust mechanisms?

3. Which nodes concentrate power or fragility (the gatekeepers; the single-point

links that break under shock)?

4. What does a formal entrant need to know about the network to enter without

destroying it or failing against it?

The contribution is threefold:

Theoretical: extends business-model theory toward interdependent informal

business models (the ecosystem reading), which the current theory lacks.

Empirical: a business-model-level map of a township informal economy's

structure and linkages — the hidden landscape made visible.

Practical: a framework a formal manufacturer, distributor, or funder can use

to read distribution, buying behaviour, actors, and sectors that are currently

opaque.

5. Boundary conditions (honest scoping, to be tightened)

"Ecosystem" boundary: the ecosystem concept must be bounded — a defined

value chain (e.g., produce, or water, or a township retail cluster), not "the

whole informal economy", or the thesis becomes unmanageable.

Scope control: the vendor example generalises, but the empirical claim should

be bounded to one or two chains/geographies (e.g., a township produce chain) with

the framework transferable elsewhere.

Data access: informal ventures are unregistered and cash-based; the small-area

census method (Charman et al. 2015) is the measurement precedent, and field

instruments already exist in the research space (4-Layer interview bank).

The concept's fit: ecosystem theory was built for formal firms; the thesis

should argue (and test) whether and how it transfers to informal ventures, which

is itself a contribution.

6. Verdict

Yes — there is a clear basis. The example is not an anecdote; it is the

compressed form of the whole thesis. The literature supports every pillar:

business-model theory for the individual venture, ecosystem theory for the links,

informal value-chain and food-system work for the chain structure, and the

township empirical base for the hidden actors. The gap is precisely that **no work

has applied a business-model lens to the township informal economy as a linked

system**. That is a defensible, novel conceptual grounding.

Next steps

1. Screen the ecosystem anchors (Jacobides 2018, Adner 2017, Granstrand &

Holgersson) into the review matrix.

2. Map one concrete township value chain end-to-end (produce or water) as a pilot

for the framework.

3. Verify metadata for the online-first years at Zotero import.

4. Fold this framing into the proposal questionnaire as the conceptual-grounding

section.