I don't think you'll see PC gaming dying, or even PCs for that matter. There's a lot you can't do on a tablet or a console, ranging from graphical and art-related programs to straight-up coding and even basic multi-tasking. It is just a shift in how technology is handling all the needs of the consumer.
Consoles are powerful enough and internet speeds are fast enough to stream music, movies, TV shows and even Skype. Having evolved from just a chipboard that played ported arcade games to systems that have developers with AAA budgets and cast is an impressive display of technology and its advancement. Having one machine in the living room to do a large amount of jobs that consumers want done is cost-effective and convenient.
Tablets themselves are still a new device that has yet to even mature and expand in the same way consoles have. Ten years ago there wasn't anything remotely close to an iPad save for some PDAs, but they were small and generally under-powered. With my iPad I have dozens of books, music, and movies at my touch for when I travel or am somewhere in my house where its convenient to do so. A lot tougher with current TVs, morso with PCs and even laptops.
PC and laptops though still have the edge. In terms of utility and control as well as the programs that run on them and functionality, consoles and tablets can't touch them. Physical keyboards and mice are excellent ways to interact with programs, menus and software, and not to mention the wide range of screen sizes, displays, etc.
In fact, don't look at PCs dying or the rise of tablets or consoles getting popular as a bad thing. It is great to see technology advancing itself. Stagnant development doesn't encourage education or job creation. There will be companies out there that want workers that studied the newest series of coding programs, hardware tech and other ideas. Every ten years is always an exciting time period due to how fast technology advances. Here's to me things from ten years ago that are completely different now:
- No Facebook
- Videogame controllers were still wired
- No Blu-Ray
- No Steam or other digital distribution networks
- Cellphones were still using monochrome displays, no GPS functions, no touch-screens
- All files at school were regularly handed in with 1.44 MB disks
- Flatpanel screens not that common at all
- Wireless networks in their infancy
This list can go on and on but I think you get the idea.