I think the problem is Amazon makes a lot of Revenue at very small margins so they have built a culture around squeezing out every last drop of margin they can.

I think the problem is Amazon makes a lot of Revenue at very small margins so they have built a culture around squeezing out every last drop of margin they can. Historically they've had a lot of negative profit years and some very tiny % profit on very high revenue. Not every large company is like this.