Will Windows 10, DirectX 12 mean a golden age for PC gamers?

Maybe a golden age for nVidia profits, but to me it seems that PC gaming is already in a golden age. Wide availability of DRM free games, as well as incredibly convenient distribution of games (Steam), seems to be a good sign.

In addition, while typical console AAA games probably don't do as well on PC, many other games are doing enormously well. For example: http://steamgraph.net/index.php?action=graph&appid=42690q730...

It's interesting to see this from Nvidia, as the tighter coupling of Xbox and PC gaming under Windows 10 seems likely to push gaming performance toward AMD.

Xbox One (and most other consoles) utilize AMD APUs for processing/graphics, and with a unified OS, it seems it will become much lower cost for developers to optimize toward AMD's architecture and for their Mantle API.

I understand that Nvidia will still remain competitive in the PC market, but this leads to potential for interesting developments in graphics processing space.