Microsoft will charge to load your account with a used game. That charge will be anywhere from 1 cent to 53 dollars. If you buy your game used from a retail store, the retail store will have to pay the charge.
Can you explain to me how charging 53 dollars+allowing the retail store to make profit+plus pay the customer a reasonable price is going to work on a 59 dollar game?
What, microsoft gets 53 dollars for the used game. The retail store get 3 dollars to sell it, the customer that turns in the used game gets 1 dollar. How is that not killing the second hand market? I just don't get it.
On topic, the same above applies to sony. Microsoft is not blocking the use of second hand titles either, they are just simply pricing them out of the market. Sony will probably do the same thing.
Once again, no on is blocking the use of second hand games. Just charging you for the use.
Just like no one is blocking the use of new games, just charging you to use them.