With digital platforms such as origins and steam, I can buy my game and download it should I never need to, eliminating the need for backups. You have no idea how frustrated I was when my car was broken in to and my box of games was stolen. I went to my backup's only to find the error message of "This is not the original disc". I try to call the company, and their only response is "I guess you'll have to go buy the game again."
It's methods like THAT that will push people to finding new methods of obtaining their beloved game they spent their hard earned dollars for. But as I stated, having backups is no longer a real necessity thanks to digital platforms.
Now, if there was only a universal platform that hosted the games with no legal contracts, no catchs, no lawyers; simply buy the game either through a local outlet or online, enter the product code, and done. It's registered to your account. A combined Origin/Steam/Impulse etc etc for EVERY game possible. I'd love to buy a copy of Cutthroats: Terror on the High Seas if anyone had it, but there are no digital platforms selling it.
This is whats good about digitial distribution and I would personally love your vision to come true. Its another and sometimes better system for users and provides another option. The only problem is who would be the person/company/organisation oversseing the system as they would want money for the service or to gain exclusive deals with game developers that the game could only be played on their system. Hacking attacks, service stoppages or even rivals using perverted legislation such as proposed SOPA bill could crash the entire system as well. The entertainment industry is already trying to censor the internet and I doubt retail stores would welcome a united platform to distribute all games without a challenge.
Steam is the good (distribution and centralising service) and the bad (aggressively seeks exclusivity and poor human support) in both of these respects and I doubt it will encounter any serious market competition because origin is probably never going to compare. To realistically compete companies like ubisoft and EA cant make their systems treat gamers as criminals.
Bethesda makes game worth buying but never actually releases its opinion on anything and is probably smart to continue doing so.