I'm a huge Microsoft supporter, I have spend many of thousands of dollars on their products from my PocketPC 1.0 all the way up to every version to WP8 and every game system, PC too (plus tons of games)
You wana know what ? I never hacked any of my Xbox systems, my PS3 is modded like crazy. If Microsoft blocks used games like they are planning to, I will mod my xbox and buy used games to play on it. Sure I will lose my achievements and wont be able to play on line but, I can play the games I want, with out being robbed. It wont be on day one, I know that but, give it 6-8 months, the hackers always find a way, they always do. I don't want go that route but, I will, if I have to.
If the fee is like $5 for used games, that is understandable because they already made money off the game when it was sold. There is very high chance, the game I buy used, I would not of gotten at full price anyway and would not be willing to pay $60 for a game that I don't MUST HAVE. So, By Microsoft being greedy (is where I see a full retail cost for a month old used game), they will lose sales. I know I am not the only one who buys a lot of used games and for the reason of value in game.
I can live with a small fee but, a used game costing the same price of retail after fees, then I guess I will be playing a lot less games for the "one" or spend more on a PS4 (if they are not doing this). I will be buying both.
PC market, is different if you buy retail games, If you uninstall the game, and resell it, it will reinstall and play, I believe the license says you can do this as long as you do not keep any part of the program on your PCs. Kind of how Microsoft's licenses are for Windows (retail copies) where you CAN resell as long as you keep none of the software on your systems.
I guess this will have to go back to a government case, just like Music CDs.. Microsoft is trying to own the media you pay for, you should have a right to do with the media (your copy) as you choose. When you buy something, it's worth money to a point (a dollar value used, like todays market), you know if you buy a game and you don't like it or don't want to keep it, you can sell it to a friend, eBay or get ripped off by game stop. The point I am making is what Microsoft is doing is taking the Media that you own and make it worthless or worth very little.
Maybe it's me, I just think it's wrong and should be illegal. That is something for the courts to decide. I don't think this will last very long as there will be a lot of people battling this one. Say 6 months after release, a large class action lawsuit will appear, I would almost bet on it.