Well, technically from the companies point of view and the agreement you sign as you pay, you dont pay to own the game. You pay for the license to play and the software to play it. Its in the fine print. You dont buy the actual game in their point of view. Here in sweden the consumer law does not recognize these contracts, however when it comes to buying mmo/mmorpg's where you sign a EULA, its different. You wont have any backing if you break the EULA and get suspended from service as a result.
Regardless, i got upset when i first heard of these plans sony (and microsoft is looking into the same thing) has for their next console many months ago. The speculation back then was that you also lock your game to the account itself, and not the console. Making it impossible to have several accounts for the same game (at least without paying for that "privilage"), like if you want personal accounts while playing online, for each family member. Its all money grabbing and stinky tactics, but i dont believe people will "rise up" and not conform to this, people rarely do, they bend over and take it. People have also speculated if hardcopies will even be an option, but i dont know if thats how it will turn out. I hope and believe they will offer both hardcopies and digital copies of the games.
I have no plans what so ever to get the next generation of consoles if they make stuff like this a reality. ps3/360 may be the most modern consoles i will own, if you discount the Ouya ive yet to receive.