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...