[foobarqux]

I don't see how the question is informative, especially since the reframing is essentially "If you had a 250 billion dollar company would you run it for 10 years? And if you had a mediocre company would you dump it and do something else?". It's like saying that you will do whatever is in your best interest at any given time.

And in any case I don't think it would change much if an investor knew with perfect foresight that AirBnB would be a $10 billion dollar company but one of the founders was planning on leaving after 7 years (or even 4). The same is true if it was a $100 million dollar company or a $0 company.

It seems to me what really matters is whether the founders will stick with it for the first 1-3 years when things are toughest.

(edit: And Larry and Sergei tried to cash out immediately).