Cloud is limited by Amdahl scaling like everyone else, but distances and latencies between nodes are higher than in a single box. So instead you should think of time sharing like in the ancient days of supercomputers. Most tasks do not require neither massive parallelism of a cloud or cluster nor computational resources of a supercomputer.
If it's the question of ownership or price... Why not make it free? (Ignore this junk, make libreoffice etc. better.)
Just think of it as a PC that gets smaller. You cannot quite go super small unless you replace input and output devices. That will require more understanding of our own sensorium.
I last upgraded my CPU when it was nearing 6 years old, and I could barely tell the difference. My current CPU is nearing 5 years old, and if it wasn't for some of the enticing stuff AMD's recently put out, a CPU update wouldn't even be on my mind at all yet - in fact I was surprised to recently notice it had been more than 4 years since I last bought a workstation CPU.
I expect I'll buy 2 workstation CPU updates between now and 2030, 3 at most. and even that would take something special to drop in the early-to-middle of my normal timeline.