> like what we do on OSX.
...which is so much of a complicated nuisance that most people simply give up. If this will go the way I think it will prepare to have to skip 10 things, write 3 ADB commands and submit a video of you spinning around for 30 seconds just to install your pirated game.
> so much of a complicated nuisance that most people simply give up
Most people should give up.
The number of legitimate unsigned apps for MacOS that your grandparents should frictionlessly one-click-to-install is essentially nil.
Meanwhile, they're receiving countless bullying demands a day to install keyloggers and drain their bank accounts.
The threat model tradeoffs are clear.
Just to install a proper call recorder or a better Work Profile manager.
Turning a possibility to install software outside of the app store should be about as normal as the fact you're using a laptop or desktop to install your pirated games.
Yeah, you.
If someone having access to "side load" an app has it to install a pirated game, then you have your OS, where you are not limited only to Apple/Amazon/Google store, simply for installing pirated software.
QED :)