AWS over the last decade has spent $ billions buying up ASN blocks.
I've never been one to use the word "rent seeking", but owning IPs is the ultimate rent seeking cloud business. Domain names can change registries but if you own the underlining IP being used (and there's a depleting supply of them) - it's a great business to charge rents on.
https://www.techradar.com/news/amazon-has-hoarded-billions-o...