> Google does reporting on how many National Security Letters requesting information about it's users that it responds to annually.

So does Apple[1]. Apple gave data on over 31,000 users/accounts based on National Security Letters in the first half of 2020 alone[1].

> Why doesn't it just ignore them?

In the first half of 2020, Apple provided data to the US government (non-FISA or NSL) about 9,000 times, and responded to requests for data with the data about ~85% of the time, and 92% in cases of "emergencies"[1].

[1] https://www.apple.com/legal/transparency/us.html

I don't understand your question. Google, Apple, Facebook et al comply with their legal obligations.

Apple does not have a legal obligation to install spyware on your phone (at least not in the US, not yet).