You are oddly certain, I'm not making accusations but blind faith that corporate compliance programs exist, are substantial, and work is just ridiculous. The recent Volkswagen diesel emissions fraud comes to mind, the CEO and four unnamed executives were charged in Germany recently. (obviously not a bribery issue, but still the same sort of obvious regulations fraud that went all the way up)

Why would Amazon or any company be immune to this kind of behavior?

Here's a list of FCPA enforcement actions in the last quarter, you can go back years. Several billion dollars total in penalties in the last few years.

https://www.fcpablog.com/blog/2019/7/1/fcpa-enforcement-repo...