Usually I would be loath to stand on the fluffy dreams of the idealistic consumer, but the fact is: Toeys is completely correct.
They already introduce measures to encourage you to buy the game initially, with extra content editions, special editions, & single use codes that give a free download of exclusive content such as special armors or weapons, exclusive maps, or 'easter egg'-style goodies... Microsoft & the game publishers don't make money on used games. Microsoft & the game publishers don't want to make something which they don't profit from. Logic therefore dictates that Microsoft & the game publishers will try to prevent used game sales. I agree it would shoot companies that mainly made their profits from used game sales in the foot, but there will be ways to circumvent that. Knowing that games will not be bought second hand will up original copy sales, perhaps allowing publishers to sell the games to companies for less, allowing better profit margins.
There is no way that people will stop buying the xbox 3 because of these measures. People didn't stop buying games from Steam when their copyright procedure became cumbersome and ridiculous. People didn't stop buying films when they made unskippable "Piracy is theft" adverts- only viewable to people who have not pirated the dvd. People didn't stop buying games to protest the fact that after a hefty initial purchase you frequently pay between a 1/3 and the whole RRP on new maps, custom content, & extra quests. In fact, there was uproar about the fact that in some games you couldn't get all the achievements that were available with the original base game without buying DLC - now it's essentially standard. You pay to play online even though with PS3 it's free. You pay to dress your avatar in fancy outfits. You pay to get the game earlier with statues of the characters. Let's face it, there is nothing you will not pay out of the arse for, providing you can't pirate it. This is an ultimately excellent way to help prevent piracy & increase profit, and they will be all over it like flies to shit.
Tl;dr - Yes, I can see this happening. Microsoft would stand to make greater profits. You already pay to take shit from big companies. They see this, they laugh, they repeat etc etc. But it is unconfirmed, so you never know. It's just fun to speculate over baseless conjecture. Wheeeee!