I assume you mean this video: http://www.youtube.com/watch?v=xXkR23N6YO8
If so (or even if not), you're right. It's worth the watch.
So my question is, how in the world are people like Beiber able to get so big? I just don't get it.
My guess is it's because of marketing. I would guess more people have heard of Bieber than Rieu. Also, Bieber audience members are vastly different that what you see here, and they are the ones doing the most iTunes downloading. I might be wrong, but it's a theory which fits the facts.
I'm not a fan, but Bieber is not without talent. I understand he is a multi-instrumentalist. So I guess that means you have to have at least SOMETHING going for you, i.e., if you're a success because of marketing, you have to have something to market.