I'm not a retard about this subject, but I'm no expert either so I'm sure someone will reply with something to make my comment worthless and noobish. Here goes...
I'm not complaining or whining why they haven't developed this to run on mac, iphone, android or other. I'm also not expecting that this comment sway anyone into making it happen or whatnot. I understand that the current game engine isn't transferable. I'm just stating that the market for games on mobile devices is huge. If a guy can make a game about throwing birds at pigs, and make $30 mil or more out of it, I can only imagine what kind of impact Audiosurf would have. As a developer, a customer and a fan, I think it would be worth it. I'm not saying money is everything... but this and the numerous other posts and topics about this show that there is more than a little demand out there. If a total rewrite is what it took... Hell I'd do it if I had the resources.
As far as devices being able to handle it, I know the iPhone could. I can't speak much of android because my last phone was an android and it couldn't even handle starting up.
The 30% you lose sucks, true. And I can see that if they had the means to do it, and the want 100% would look greater than 70. I guess to me 70% is better than nothing at all. Then again, this game is already out and successful, just not where everyone wants it.
Hope my 2 cents isn't out of line.