You have it backward. The console market is shrinking, while PC and mobile are growing. The PC and mobile markets sell games as a service, while consoles are tied to physical media.
I'd like to emphasize consoles are what is holding gaming back.
Long time ago in the golden age of PC gaming there was no "next gen". There was simply "new releases". Hardware was improved and released in set intervals. The average gamer could get high graphics now, and medium on the sequel or the next big release.
With every new release there was always one of them which was leaps ahead of the pack and boom, it forced competition. Each new game was an improvement over the last and this in turn promoted growth within the industry. In fact, it was so competitive that the games were pushing the current hardware to its limits at such a pace that people couldn't keep up. This made PC gaming a very expensive habit, especially after owning 3D GPU's became a must have in order to play games.
Then the PS3 and Xbox 360 arrived. People were able to get great 3D graphics, at the time, for a low price of a custom built entry level PC (lol) but since most gamers didn't want to deal with the hassle of building a PC the masses flew from their PC chairs and onto the couch. Owning a console assured gamers that they would get solid high quality graphics for at least 3 years without having to upgrade any hardware. However, in time the devs got lazy because the consoles provided an artificial shield where they could remain in business by releasing cloned games using the same engines and not going beyond the limits of the hardware. Enter the COD era.
Finally, it's very interesting to hear about the stagnation of PC gaming because I can name 1 (one) game on the PC that has a larger user base that the entire Xbox Live online subscriber base.
