As to the money grab, yes, it is. Pre-owned game sales have been funneling hundreds of million of dollars into game stores like gamestop and not back into the game development companies that make the games.
Think of it this way, your a video game developer (not the big EA) but the companies that work for EA to build games. You have to produce a game for 50 million dollars, EA publishes this game to retailers, with pre-owned game stores the total number of units of games sold have decreased far more than if people just let their friends borrow the games. This means that with fewer units sold, they have to increase the retail price so that they can re-coup the 50 million cost + profit margin. So the game development companies in the end get shafted as their margin runs downhill into Gamestop's pockets with the pre-owned market.
What Sony/Microsoft are looking at is ways of brining that back to the industry, don't get me wrong and to get a piece of the pie. The reality is that the more money going into the industry leads to more games. More money going into game stores does not lead to more games, it just keeps the stores open. Last I checked with Amazon, Direct Download and other vendors we don't need stores anymore. That is just overhead on the industry.