Why not? It’s not going to be cost effective to discard a usable computer, of course. But hen your phone can be hooked up to a monitor, mouse and keyboard and the phone’s internet can be used to stream the remote computer, why have a computer? Or if your phone could give you the same interface as your current computer?

I will personally most likley always own a “ordinary” computer, but I wonder if a majority of the populace will.