PC gaming is not even close to dying.
Steam, MMOs (not just WoW, think of all those Korean MMOs, even Runescape). The problem is that people only look at retail sales and conclude that consoles are overshadowing PCs. This isn't true. A huge amount of money is being spent online through subscriptions, downloaded games, the massive amount of revenue from casual games, and hardware sales aren't being counted at all.
This article covers it. Or this interview with Doug Lombardi.
PC gaming dying is a myth.