Number one, you become a recurring subscription instead of a one and done deal, making it incredibly profitable for industry
And number two, the government can more easily snoop on your data when it's all in the cloud versus a HDD box in your closet.
Granted, I think we're far away from that future, but I do feel that's the future the powers that be desire and they can use various mechanism to force that behavior, like convenience, and pricing, like for example making PC parts too expensive for consumers and subsidizing cloud and mobile devices to accelerate the move, and once enough consumers only know how to use Apple or Google devices they'll be less inclined to spend more money to build a PC and learn what a Linux is.