Looking at what's happening with RAM pricing and Crucial being shuttered, the doomer in me thinks they could just pull the same thing with every other PC component. It's not like some plucky band of upstarts can start 3D printing organic free-range FOSS processors, hard drives and motherboards in their garage- all of this shit comes out of a couple of giant plants in Asia. If porky strangles the supply, that's it. In the end all the average joe schmoe will be left with are cloud-based terminals that rely entirely on subscription services and that require strong identification to even use (and that will monitor and log every single fucking thing you do while drowning you in ads)
Wanna install Linux? Go ahead! What are you going to install it on though, your grandpa's old Pentium? 
Wanna ditch subscription services and sail the seas? Oops, it looks like hard drives cost 5,000 dollars and are only sold to enterprise customers. I guess you're not storing that media anywhere
Our automated content scanning systems found a spicy pro-palestine meme in one of your chats. Your accounts have been terminated and the appropriate authorities have been contacted
Even if you can own the hardware, you won't own the software. You'll pay big prices for the privilege of licensing Adobe Studio, Microsoft Office, EA games or whatever. If the corps at any point that they don't want to support a program, they can just make it impossible to use, even if it's downloaded on your computer already. This already happens, this isn't a vision of the future. You can pay for the right to use something, but not to own it
Linux and open source software provide an alternative to spyware and software as a service, but you will still need hardware