Every time a new console is released, the reviews say that they are "super computers", and there are articles proclaiming 'the death of PC gaming'. The reality, is that they are low end PC equivalents with a mid-range graphics card from last year. It's this way every single time.
There's nothing wrong with that: a GTX560 or HD6870 are still very capable cards, and blow the doors off last gen consoles. An Intel i3 3220 or AMD FX4300 have more than enough muscle to push 30fps through those cards, which is about all console gamers need from their hardware. I doubt those consoles need more than 4GB of RAM either. The resulting gaming experience is plenty good enough.
However-
As long as people continue to need a PC for professional use, there will be games for those PC's. When I built my PC, I had CAD and CAM renders in mind, so I went with something decidedly stronger than an i3 and paired it up with 32GB of RAM (and yes, a CAM tool path render can eat that much RAM up). Adding a graphics card for about $300 to that was much, much cheaper for me than a console purchase this gen will be, particularly when you factor in the price of software.
PC gaming may change, it may evolve, and it may not have room for as many component manufacturers in the future, but for as long as there are industrial applications that demand more power than a tablet can deliver, there will be PC's. Where there are PC's, there will be people that want to play games on them, and that means economic opportunity.
The only thing that abhors a vacuum more than nature, is a capitalist economy. PC gaming is here to stay folks.