Bootstrapping to a Billion (Zerodha founder story)
Forbes India
FreeIntermediateIndia
Zerodha's founders built specifically for the self-directed retail trader who was fed up with high commissions and clunky brokers, deliberately ignoring the wealth management and advisory segments most Indian brokers chased at the time. It's a useful India example of staying narrow on a clear behavioural pattern (people who trade themselves and want simplicity) instead of widening into adjacent, differently-behaving customer types. Good grounding for founders building financial or infrastructure products in India.
Zerodha targeted self-directed traders specifically, not the broader wealth management market most incumbents chased.
A clear, narrow bet on one customer behaviour (self-service, price-sensitive trading) outcompeted broader positioning.
Staying disciplined about who you are not serving was as important as who you were serving.