Believe me, Google does enough a/b testing, and has enough experience in psychological manipulation to know where “the line” is for most people.

Sure, some will never use their product(s) again when pushed too far, but they don’t really need everyone to be using their products.

Only the users they can profit from the most are of value. If a terrible UI, awful UX, or even a paid subscription doesn’t scare them away from using a Google Product, then each of those users becomes a cash cow.