I just don't see it. In 2004, there was a large untapped market of non-gamers that no one was making games for. Certainly there was no centralized, user-friendly place for a gamer like that to go to.
Today casual smartphone games have larger marketing budgets than even the biggest PS4/XB1 games and even casuals spend several hours a week already playing video games.
"Download for Free At The App Store" is now the biggest marketing slogan in the game business by a country mile.
Life before the iPhone/iPad/Android and Facebook was very, very different.
Today there are more casual games being made than "core" games and they are like 60% of the revenue of the industry.