Exactly. What Radiohead did wasn't a business model - it was a publicity stunt. It worked out really well for them, too. Got a lot of people to buy their album on principle; even got a lot of people who would have never even gone out of their way to listen to it to "give it a spin" - brilliant strategy.
But, a model for the future? No.
One thing people REALLY need to consider: it's easy to talk about this "new business model that's going to emerge" - but you really should think about what that might be. I hear LOTS of people bandying that phrase about, yet virtually none of them seem to have a clue as to an alternative, in concrete terms, that specify how that money is to be made.
It's easy to talk about T-shirts & playing live shows - but the profit margin on shirts isn't that great (they're really supposed to be a promotional tool), and how many of you have any idea how little most bands get paid to play live these days? Half the time, it's a losing proposition. Once you factor in all the expenses, you make less than a burger-flipper, if you make anything at all.
Yes, the current model is messed up; yes, the RIAA is acting INCREDIBLY stupid; and yes, the changes in the landscape have real possibilities for things to change for the better - maybe. But please, people - do your homework before you simply jump on the bandwagon for unspecified change.
Always draw your curves, then plot your reading.