It will likely never return. Games were at their peak when it was computer nerds making games they wanted to play, with the games then being played by other nerds. Since there's money to be made, clout to be had, and egos to stroke, we will never be rid of the invaders.
A lot of people would need to stop playing anything videogame-like in order for this to happen. Perhaps one possible future we could see is the majority, sick of the digital world making their existence more and more empty, going back outside and engaging in all their extroverted activities, using computers and the internet for only information look up and minor communication. This would create that crash and, with no more mass appeal, games would return to the realm of the nerds.