Let's say tomorrow that you find a better way to do search. It's going to crush google, and MS.
You hire a team, smart people the VC's throw money at you. Everyone is happy. Your growing and the next darling of tech.
Google comes in and offers to buy you out. You decline cause you know that they are blockbuster and your Netflix.
In retaliation google hires all your staff, and sends them to the roof to rest and vest.
Thats great for the dozen people who got a great deal from google. It's bad for the rest of the world.