You realize that a simple explanation is just "Amazon has higher standards", and thus exits more people. I'm not saying that's true, just that it entirely fits

You realize that a simple explanation is just "Amazon has higher standards", and thus exits more people. I'm not saying that's true, just that it entirely fits the model. Another explanation would be "Amazon is worse at filtering on entry", e.g. "Netflix has a better intake with fewer false negatives". Of course, "Amazon is a shit place to work" is also a possible explanation.