I don't know if asdf was suggesting they "crush dissent" - but I do think "WOULD they?" is a good question to ask!
I have always wanted to do a startup that has more mid to long term success as a goal- "37signals-like" if you want to call it that- but I've always felt that there is a HUGE amount of pressure to grow grow grow and sell.
And btw- I really do get the feeling reading news.yc and other venture related sites, that many who are into the startup scene right now look down on anyone who doesn't build-to-flip... but that doesn't jive with all the positive feedback given to companies that buck the trend and hold on longer. anyway that's enough rambling for now.