the locked down software platforms wherein users can't install anything on their own devices without the owning company's say-so is the artificial monopoly. they're trying to get away with adding things like device management now to weasel out of it but in reality these are artificially high barriers to entry for any competing software distribution services or 'stores'.
when Amazon can barely even get a foothold in a competing ecosystem with its own 'app store' you know it's anticompetitive and it's working.