It would yes, but my argument is this. Anyone who has a modern ("AAA" gaming machine) has probably paid a fair chunk of money for it. For a high end one, maybe $2-3k. Now consider how much of that money went into the last 10-15% performance of the machine. There are significant diminishing returns. It's for example the difference between a mid-range i5/i7 and the highest end i9 on the CPU end, or the difference between a 1660ti and a 2070 on the graphics card side. It's often several hundred dollars that went into the last 10%.
So: even if I built that machine to not be exclusively used for gaming (which would be an outlier), anyone who has a machine of that kind could easily motivate making it exclusive for gaming, because there is so much money in that 10-15% that we can buy a second much cheaper machine (e.g. a low end laptop, chromebook etc) to use for other things.
So: even if I built that machine to not be exclusively used for gaming (which would be an outlier), anyone who has a machine of that kind could easily motivate making it exclusive for gaming, because there is so much money in that 10-15% that we can buy a second much cheaper machine (e.g. a low end laptop, chromebook etc) to use for other things.