[shortsunblack]

Business models do not have by their own virtue validity. They are only as valid as they are societally useful (and) as a side-effect produce economic value. Which can either be captured privately, or publically or on the consumer side (consumer surplus).

Not allowing iPadOS to be a full fledged OS, when it literally can (an iPad is just a Macbook Air with no keyboard at this point) is intentional attempt to reduce consumer surplus. The state can intervene to limit such technically unjustified attempts. And it should. And it does (thankfully).