Part of the plan (a big part) is that any big ideas you come up with when you’re in the office and not working belong to Google.
Scenario 1: It’s 5pm so you go home, after dinner you hang out with a bunch of friends, many who work at other companies. While you’re hanging out, someone has an idea for the Next Big Thing in tech. Everybody talks about it, gets excited, and a year later everyone quits their jobs to start NBT.com.
Scenario 2: It’s 5pm so you go to the on-site gym, you stay on campus for dinner, and you hang out with a bunch of cow-orkers / friends, all of whom work at Google / Meta / Amazon. While you’re hanging out, someone has an idea for the Next Big Thing in tech. Everybody talks about it, gets excited, but since you all work for the same company you don’t quit. The company has ways for employees to work on projects like that while not having to quit. And, if you did quit, they might be able to sue you since you came up the idea on company time, and used company resources to develop it.