The only one that becomes less of a possibility due to hardware constraints is Dreamcast, but even that could run the game with appropriate modifications. Pc games can be altered, but the drawback is so much can go wrong with a PC game. You comp runs tons of stuff at once. If one thing goes, you can't play your game. Not to mention the system requirements and upgrades you need to play the game.
Consoles just have to worry about the game, nothing else.
As far as the release of Obi-Wan,I bet you money it will be released on PS2 as well as at least one other system. Well, for one thing, it can support the game. Second, PS2 is wiping out all other consoles in sales, and it will probably continue to do so. Thats worth it right there. Then you can play all the original PSX games, most with heightened graphics and speed.