10.4 games per user still seems low for Steam, but it's possible. More interesting would be the average sale price for games. I currently have 78 games in my Steam library, 1 bought full price (Civ 5 $49.99), 4 in the $20 to $30 range, most under $10 or part of a cheap bundle, and some bought from somewhere else.
Checking my Steam account I have spent $415.65 since 2007, average of $7.42 per game. (After taking 22 games off from external sources, Kickstarter, Humble bundle, Origin and Physical)
Last year I spend $1065 on console games, $135 on PC games. About an 8:1 ratio. Same for time spend or likely a higher ratio in favor of consoles.