> We know, however, that cloud gaming is not right for everyone today. If you play more than 8-10 hours of games each week and you want the best experience possible, you should still build/buy your own gaming PC.
And that's the number I'd say; ~8 hours per week. Less than that and cloud gaming might make sense. But any more and you'll save money by just building a desktop. Because let's say you're charged $0.60/hr; that's roughly $20/mo @ 8hr/week. A typical gaming PC might last 3 years, especially nowadays with the tremendously powerful GTX 10-series cards and the lack of innovation across both the CPU and GPU spaces. That'll cost lets say $700 (targeting 1080p60, low-range i5, GTX 1050Ti, etc). That's $20/mo averaged out.
My hope is that Nvidia/AMD can continue to make 10x jumps in graphics card tech, because we've already hit 1080p60 and that's enough for most people for a while. So if the next generation GTX 11-series (or more accurately, the Tesla V-series) cards can fit more 1080p60 streams on each card, that should lower the price of cloud gaming. And on and on. But I think, as far as technologies today go, it doesn't make much sense.