It's almost impossible to have a company with the scale of Google to have good culture. Good perks and you get spoilt in that aspect for sure, but I doubt culture is an important aspect of any company's hiring practice once you get to Google's scale and needing to hire as many people as possible to grow. Where there's diversity, there's also diverse opinions and political leanings and personalities, which leads to conflict, misunderstanding, people trying to one-up the other, and it all leads to a toxic culture (unless you're the ones coming out on top). But hey, there's always therapy (aka the internal groups) to help you along.

Cultures dies as a company grows to a certain size. Feels like the best way to combat that would be to have teams that are small within the company and operate independently and with autonomy, especially when it comes to hiring. That probably isn't realistic though within a large company. Am keen on what ideas people have or if they've had experience with something that works with regards to retaining a good culture.