Then buy the used copy in two years time. No video game ever requires you to own it right away.
You're just rationalizing an excuse to rant, and to not stick to your alleged convictions.
If you'd rather tell Gamestop that used console games is what they should stock, then more power to you. From a "taking a stand" perspective, you fail miserably.
If you're going to come onto a video game message board espousing your convictions and principles regarding DRM, the point is undermined when you demonstrate a complete lack of actually sticking to your convictions.
I have bought 51 games on Steam (not including expansion packs), and I vote with my dollars to support steam as a distribution service, and the PC as a gaming platform. I don't just buy steam, and also use services like Gamers Gate and Direct2Drive, because in general I support digital distribution.
I have not bought games like Splinter Cell: Conviction (a game I really want to play, especially co-op) because I do not agree with the DRM model used. I find it too restrictive, and I do not want to support that particular model. I do this with the understanding that I might never get to play a game that I really, really want to play. I didn't go out and buy some used console copy to encourage Gamestop/EB Games to stock more used console games instead of new PC games.
If the Uniloc DRM is a dealbreaker for you, then you obviously don't want Alpha Protocol enough to compromise your position. That's fine. So don't compromise your position, and hold Sega to their guns if/when they patch out the DRM. On the plus side, your sale will tell Sega that "hey, when you removed the DRM for this game, I bought it. Take note."
But yeah, go tell Gamestop that you think used console games are the way to go. Thumbs up.