People (myself included) say the same thing about why they buy their tech illiterate relatives macOS computers. And it works. And guess what, it works despite Apple not getting a cut of every everything.
My girlfriend only install the handful of apps she wants both on her Mac and her iPhone and doesn't go back to the app store. She just put things on auto update. Most people don't fiddle with their computing device. And if installation steps are confusing, she just asked me to do it. I guess that's why Microsoft are enabling so many things on Windows as most users won't enable them by themselves.
That's neither here nor there for whether Apple has the right to insert themselves into every transaction on their platform and gets to decide which apps are allowed to exist.
And let's not kid ourself: Microsoft is enabling (and re-enabling and re-enabling and re-enabling) so many things because they are slowly turning their OS into spyware to make more money, not because they care at all about their users.
I'll re-iterate Cory Doctorow's quote: "Anytime someone puts a lock on something you own, against your wishes, and doesn't give you the key, they're not doing it for your benefit".
