This is why the PC gaming industry is dying
PC gaming is on the outs for two reasons:
1 - Developers are much happier working with fixed platforms where compatibility and performance isn't an issue. Time is money, and quite a bit of both are left on the table after spending so much effort getting your game(s) to run on as many PCs as possible. Ask any game programmer how they feel about Intel's video chipsets, which are in an unfortunately large number of computers.
2 - DRM + DLC + hokey installation bull**** (Rockstar Social Club?) plus knowing your games are all going to be half broken until the first few patches come out (Stalker?) convinced many PC gamers to jump ship, or at least tone it down significantly. Why buy Fallout now when I can wait a year and get the whole game for so much less?
If you need a third one, take note of how many PC games actually sell that are not
an FPS, RTS, or MMORPG. The answer would be almost none. You can't develop anything genuinely unique on PC and expect it to sell. If it does it's a total fluke. You'll notice I haven't even touched
on the subject of budgets and dwindling ROI for modern titles. Piracy has always been an issue, and it has always been rampant from the days of commies and apples to this very day. The game industry is going through the same upheavals that have stricken many similar industries. Piracy is a tiny part of a much larger problem.