Teens Don't Buy Legit MP3s Because They Can't?
I'm not sure what tip you are referring too, but you're welcome ;-)
I see no contention in your post. My point was that of those that would/might be inclined to purchase probably won't because the current system available to them lacks immediacy, is a hassle, and necessitates purchasing large (in their view) lumps of credit.
I agree that a lot of people probably would acquire their music through illegal means regardless of the ease of purchase as I noted in the final line of my original reply.