Twitter is an example of a brand that is s famous that it does not really need the app store of Apple. It could offer the app for download on its own website, if Apple would not keep its ecosystem so closed. The only reason that Apple does not allow that is making money. Apple does not own your iPhones. So it does not have the right to prevent you from installing whatever software you want from whatever source. My notebook actually contains much more private information than my smartphone.
Users go to x.com, select "Add to Home Screen" from menu. X Corp gets to keep 100% of their revenue, also can fire half their mobile app development team as is their trend.
Every justification for why that isn't viable to X Corp is an example of value Apple
could give for value provided through the App Store.
Imagine they did they same for Macs. Would you still defend that practice with the same arguments, if you could only install software from the App Store on a Mac and would have to pay a 30% fee to Apple?
This never will happen and never could happen. If apple wants to create a computer which requires people to get their apps through the App Store, then they should have done more damn work on making iPad better.
The market and regulators would never stand for them locking down an existing platform like this.
That said, the Mac app ecosystem is
significantly less healthy than the iOS app ecosystem. I would posit this is partially because of so many companies steering to websites rather than having native apps, or having their "native" app just be a repackaging of their website a la Electron, or a general lack of ability for the average Mac user to discover new apps which they might find useful.
That the Mac App Store is not required has enabled apps which do not meet its security requirements to stay alive, but it has not led to a more vibrant ecosystem.
Would it be okay for you to pay a 30% fee to Apple, if you use your future Apple Car as an Uber?
This is a complete nonsense argument compared to the App Store, as the 30% fee is on app creators to sell services via native apps to be consumed in-app - not consumers providing services in the real world.
But that said, there are terms
to this exact effect in the FSD contract provided by Tesla - that you could only have your vehicle provide ride-sharing services to companies approved by Tesla, so that they can take a cut.