Here is the part where this can go off the rails. So the long tail will hit, people will 'discover' him (maybe on his second or third video) and will download this one. There will be many copies out there in circulation. The temptation will be to think "Gee if people couldn't just get one of those copies out there already I would be making even more money!" Completely losing sight of the fact that the videos out there are an agent for discovery and 'tasting' which is bringing more people to his web site.
People sometimes go all green with greed when that happens. Money can do that to people sadly.
That being said, the really cool thing is it adds another 'success' story to Trent Raznor's Radiohead (I don't think they were ever this transparent with the numbers there but I may be wrong) and makes it harder to dismiss the successes as 'anomalous' rather than 'reasonable expectation'. It is the presence of success stories that will get more and more people to move this way.
I wish it wasn't like water eroding a rock though, progress will be rapid when the flood starts but for now it is just a trickle.