One of the big things I know about is the being "in love with the technology". Founders get replaced in their own companies because they focus on improving the

One of the big things I know about is the being "in love with the technology". Founders get replaced in their own companies because they focus on improving the technology, rather than revenue. There is a balance, but part of the reason VCs and investors get shares is because their financial interests should be represented in the company. If as a founder you aren't representing their financial interests, then of course they will replace you. There are big dramatic forced resignations, but often there are simple restructures. A founder will be removed as CEO, but stay on as a VP of development, for example. His ownership stays intact, but the executive leadership will be more aligned with the interests of the investors.