I personally don't like Apple and will never buy an Apple product, but I fully agree. People who buy Apple products are perfectly fine with the way Apple restricts their platform. If you don't like this as a developer, then just leave and stop developing for iOS.

A single big company doing this just to cut down on some fees just reeks of greed.

It is not a single company, Google also kicked Fortnite, and it has been a thing in game consoles, car infotaiment systems, pre loaded apps on TV settop boxes and blue-ray players,....

The world is unfair, no one is expected to do charity for developers.

We are not a special snowflake job that isn't expected to give others the necessary payments to keep the whole chain working.

For most business that is not a choice. If you are making a utility or game then maybe, but can a company like uber decide that they will only be available to android users?