Perhaps I’ve been unlucky but my experience at big tech has been marred by churn and burn culture - high pressure tactics to get the most work out of employees and discarding them when they inevitably burn out. Average tenure was 1-3 years. Amazon was particularly bad at this. The only modicum of power employees have is in quitting and now that they’re exercising it the employers are acting like their throats have been cut.

Edit: a story I like to tell people about what it’s like to deal with Big Co. is that I solo built a $50Mp.a. profit data science artifact in my first year. They offered me the highest once off bonus on offer $30K stretched over 6 years, no promotion (those were used to keep US citizens). I said, give me the same bonus as my manager for for ‘managing’ my project ~$150K in one year or I’ll quit. They said no so I quit. The artifact was extremely difficult to build and written in Scala, it took a lot out of me, no one understood it after I left. They rewrote it in Java which made it even harder to understand. It atrophied over 5 years and now it doesn’t even work at all. I’m in contact with my former colleagues and keep offering to fix it for 7 figures, but no dice. They’ve now convinced themselves it is impossible to do. That’s how committed they are to maintaining the status quo.