Earlier quoted context omitted.
>I don’t think there is anything that suggests Apple is going to stop people from installing Apps outside their App Store Of course there are things that suggest this, such as, that is how iphones and ipads work, and its become increasingly difficult over time to do it on a mac.
As in what, having to RMB -> Open ? In what way was it made "more difficult" than that? What exactly suggests it is "becoming (even?) more difficult"?
Then they introduced Gatekeeper, but you had the option to disable the Gatekeeper check for all applications.
Then they removed the option to disable the check for all applications. You now only have the options "App Store" and "App Store and identified developers".
They have definitely made the whole thing harder and harder during these past 10 years. Now if you don't want to pay Apple for a developer license, or you're just otherwise ousted by Apple (like Epic Games), you need to teach your users on how they can circumvent Apple's restrictions.