How would "charging for sideloading" work? If I publish an app on my website, I wouldn't have a contract with apple, right? Would they charge the user?
They could try some shenanigans like requiring "certification" to side load anything and that would come with a contract.
It would be struck down by the courts and version 2 of this regulation but for a few years it would be there.
I'm hoping apple doesn't do that but at this point I think they'll try anything they can to protect their golden goose (aka app store) even from minor competition.