Venture funds look for a scalable model, at a country or a regional level. Otherwise the entire game would be reduced to a manpower or machine multiplication exercise. For example, it is very easy for Hindustan Lever to double sales of Liril - a soap without incremental capex, while Gujarat Ambuja needs to spend at least Rs4bn before it can increase sales by 1mn ton. Distinctive competitive advantages must exist in the form of scale, technology, brands, distribution, etc which will make it difficult for competition to enter. All investment decisions are sensitive to this.
Most deals fail because of valuation expectation mismatch.
In India, while calculating returns, venture capital funds will take into account issues like rupee depreciation, political instability, which adds to the risk premia, thus suppressing valuations. Linked to valuation is the stake, which the fund takes. Exit Without exit, gains cannot be booked. Taxation issues come up at the time. Any fund would discuss all exit options before closing a deal.