Do you have any links with regards to these market segments? I know that nowadays many people are mobile-only, but I struggle to estimate percentages. I guess it's going to be very different in developed vs developing economies, based on personal observations, but again I would like to see stats. I was able to find things like personal computer sales figures but nothing was said e.g. about desktops vs laptops and whether the laptop is for work or personal use and in the latter case, general vs gaming focused use.
I think the challenge is that uses for a PC, or even if you restrict it to "PC gaming" is such a wide net it's hard to make anything but the most vague/general readings from that audience. When the monthly steam hardware survey results come out there's always a crowd of enthusiasts putting their spin on what should or shouldn't be there, when that includes people playing simple low requirement games all the way through to reality simulators. For non-gaming uses, I think the most significant step was Vista, where they moved over to GPU acceleration for drawing windows (but with a software 'basic' fallback), video decode acceleration and to a lesser extent encode for any device with a camera, although I'd say mobile devices likely exercise encode capability more than desktops do generally.