More like: more AAA titles for Linux means more time developers spend optimizing drivers and games for the platform; also if there's a stable and very advanced platform where people can play games without worrying about paying for Windows or other nuances, people will go for it; one of the main reasons people play console games is because it's simple enough to buy the hardware and play the game, without installing anything or else.
People wont change from Windows to Linux in a day, but this can shake waters. Remember when if you wanted to play a really cool and newer game the Arcardes were the only solution until consoles game the gamers the economy, comfort and power to play those same games in their houses.
Playing games at home has untold numbers of advantages over playing games in an arcade, not the least of which is being able to play in your boxers.
What part of Linux gaming offers that much of an advantage to encourage an exodus?