That's very... transactional. I prefer organizations with cultures which are more relational.
I spent a lot of time at work. I'd like work to be a community, for my work to be meaningful and interesting, and on the whole, that's more important than making a half a megabuck a year optimizing ad clicks.
I have a job like that, and it doesn't pay as much as FAANG, but you know something: it pays enough, and I'm happy.
I find the whole modern/California transactional culture is toxic to my psychological well-being, from divorce/relationship-hopping culture to job hopping culture to everything else. The whole world doesn't work like that, fortunately. Please don't try to force it to.
(And conversely, I'm fine with the transactional culture existing, so long as I'm not in it)
I hate generalities.
Last time I left a firm, there was 12 months notice (and the decision was mutual). That was the right choice for both sides.
The organization I'm working at right now, it's not uncommon to give years of notice, mostly heading for retirement.
Most tech companies are definitely two weeks, but that's far from the universe.