I can see how it would be better for you. How would this be better for the startups?
Unless they're just removing a competitor, but if that's the case they could always violate the custom.
I was talking with a potential client this morning about how he used to us Drop.io and built some systems based on it in lieu of the API calls he needed then Facebook acquired them.
It may be the case that the Facebook purchase in this case was about more than talent, but if every startup is only buying time until their big exit a general distrust amongst users may be the result.