I can't speak for the PE side, but VCs aren't investing their own money. They have limited partners (LPs) that provide the money, and expect returns on it. This

I can't speak for the PE side, but VCs aren't investing their own money. They have limited partners (LPs) that provide the money, and expect returns on it. This LP money goes into funds (vehicles to make investments out of). Each fund has a limited lifespan (the company I work for has fund lifetimes of around 8-10 years). This means that all of the money should be returned to investors over that time period. Since VCs can't make all of their investments at the beginning of the fund (for many reasons, chief among them scarcity) they need to show returns in an even shorter timeframe. The bootstrapped founder, on the other hand, doesn't necessarily need to exit the investment in those 8-10 (or shorter) years. There are, of course, serial entrepreneurs for whom that is their goal, and for them (as the article points out) their incentives are aligned. For "lifestyle company" founders (not meant to be disparaging), an exit may not be necessary at all. The key differences are time horizon and exit.