Quantum computing isn't just a faster tech. It's a very different means of answering very specific questions. I cannot see how it would ever be useful for something like a GPU running a game, or a CPU running a macro on a large spreadsheet file. I could see a use for a quantum computing module attached to a computer much like a graphics card, but I cannot see how a quantum processor would do the role of a CPU. Given that, I don't see a market for it in everyday computing.