The EU found that argument unconvincing. As, likely, do you. Requiring a Mac and a reinstall every week and not more than three apps at a time is blatantly anti-competitive.
Except people that don't have a computer, a decent chunk of technical know-how, and if you want the apps to stick around for longer than a week, $99/year.
How?
For most convenience you need to have developer subscription. Then you can use something like sideloadly.