I bet nothing of the sort is going to happen.lol it is surely not a PC replacement as Apple loves to advert, but calling an iPad a pointless device is BS. More likely macOS will become locked like ipadOS/iOS. If no law comes to the rescue, I give it max 3-5 years, then it’s gameover with macOS sideloading.
Just makes no sense on a computer. Apple knows that. They also stated numerous times that they are not going to follow that route