Suddenly Pro isn't good enough to allow me to control MY computer?
Who says it's YOUR computer? Just because you paid for it, you think it's YOUR computer? It's no more YOUR computer than your smartphone is YOUR phone.
It's Microsoft's (or Apple's) computer. It's the cellphone carrier's phone. They are nice enough to allow you to pay for it, and allow you to use it --- but in return for those privileges, you've got to toe the line and follow the rules.
YOUR computer, indeed. The CEOS are laughing at you at this very moment, patting themselves on the back because they've allowed you to believe it's YOUR computer, but they know the truth.