Ask HN: Why doesn't Amazon Prime Video have a simple domain like primevideo.com?

When I go to primevideo.com, I get a button prompting me to go to this address:

https://www.amazon.com/Amazon-Video/b/?&node=2858778011

This is a very minor gripe. For netflix is netflix.com, for hulu it is hulu.com. Why not Prime Video? Amazon even owns primevideo.com but they ask me to manually click on the button to be redirected to the above link.