Well they could always license this patent to other companies.
By the time they implement this it might be in 3d! Those glasses might obstruct the eye sensor so you don't have to watch.
Maybe they'll use this idea with PSN! It wont be free, just paid for with your time.
Well on a more serious note.
Sony wouldn't patent this so other companies couldn't use it. It made you all so happy, I am sure they'd love the same reaction to the competition. They took it to make money somewhere. Be it in licensing or in use.
But it did give me a great idea. A real life "live action" commercial in front of some Sony offices!
Someone could hold a sign in front of the office telling them a commercial is coming.
Then someone takes their PS3 (or system of relevance) and smashes it up real nice, putting it into a box that says free.
A sign that says, "Embedded Marketing, discretely get your point across!"
Followed with a sign saying you are about to return to work.
If they watched it all, you (probably) got your point across. Gave them the idea for new forms of marketing. (Commercials at work! Now your employees can spend their breaks thinking of "X" product!) Being the most interesting thing they'll see all day, word of mouth will be your tool. And to top it off, when they go back to work, it was after you told them to.