Amazon often pitches itself as having a "writing culture", but much like the LPs and other mantras like "working backwards", this is more a case of cult-like exceptionalism than any sort of actual advantage once viewed from the inside.

I haven't seen any evidence of a company culture scaling beyond ~10 people - in a bigger group, sub-cultures and individual personalities seem to inevitably take precedence. Arguably this is even more the case at a place like Amazon where raw metrics are king - nobody cares how culturally aligned your work is as long as you are delivering the goods.