There's really no such thing as a "gaming PC" anymore. Now, I know some people will look at that cross-eyed, but I think people have the wrong idea. Gaming PCs were used a lot back in the late 90s and early 00s because of how bad processors were. Dual-core CPUs weren't prevalent until AMD brought out the Athlon 64 X2, which was rather expensive, and without one, all it took was a single background process firing off to bring your online game to a halt. I knew quite a few hardcore WoW players that had two PCs, and one was strictly for games as that's all it had on it.
I bring this up, because I think that people tend to ignore something about computers:
they are general purpose machines. I don't purchase a computer
just for gaming; I buy a decent machine so I can do everything else
and gaming. I buy decent components so I can (hopefully) have a rock-solid experience in
everything that I do (not just gaming).
The one thing that I do think people leave out of the pros of PC gaming is the better backwards compatibility. It isn't perfect by any means, but just try and fire up Max Payne on your latest console. The game was released on the first XBOX, but it still runs on the PC just fine...
constipation face and all.
Generating assets for 1080p doesn't really hold back 2560x1440/1600, and honestly, it isn't for 4K either. Why? The monitors aren't any larger. People are already using SSAA (i.e. render at 4K, resize to 1080p) as a method of reducing jagged edges. Rendering at 4K and displaying on the same size screen isn't really much different. The only difficulty is ensuring that things such as HUD elements are displayed correctly.
I would argue that I think the 30 FPS lock-in is a bigger problem that we've seen lately. It isn't just a developer being lazy in their port job. In some cases, they did it because it's inherent to the game's design (i.e. Need for Speed Rivals).