Personally, no, for a variety of reasons. A founder who is a control freak is a massive red flag on it's own. Profit sharing is also easy to game either for or against someone as the movie industry proves constantly. So I don't personally feel like playing under-handed games constantly (and if I don't, other will so we're back to square one) to maximize how much revenue is attributed to me. If I wanted to play politics I'd have joined a larger company and gotten paid a lot more than any startup.

edit: Also, incentives people to think short term and pump us revenue at all costs (then find another job when it comes crashing down) which is not a great environment to work in.