@LTNK
Yeah, I am going by attach rate, which does take into account ps3s which weren't bought to play games, but doesn't take into account that they sell no games for those systems.
As per how much they make per game,
http://www.forbes.com/2006/12/19/ps3-xbox360-costs-tech-cx_rr_game06_1219expensivegames.html
"Console Owner Fee: 11.5% (about $7)
This is why Sony, Microsoft and Nintendo are laboring so mightily to make their machines to success: Each gamemaker that wants to roll out a new title has to fork over a fee for each unit sold. This may vary per console maker--some publishers say creating games for the PlayStation 3 is more expensive because of fees Sony charges to use its Blu-Ray DVD standard. "But that number can get smaller depending on the publisher's status," says Peer Schneider, vice president of content publishing at IGN, News Corp.'s gaming portal. "The fee can be waived for exclusivity to a platform--that will buy you a kickback."
Publisher profit: 1.5% (about $1)
After all other parties--including the in-house or outsourced development teams--have been paid, the publisher collects about a buck toward the bottom line. As these pricey consoles become more mainstream, those dollars will add up."
So, for every 3rd party game they sell. They make at least 8 dollars. And for a controller, they probably make 15-20. First party games probably make more.