I don't think this will matter much to Apple. While I can see why DVD Jon does this, I really can't see why he does not instead spend his time and talent on creating a new product. I take it its much harder to to do that, so he spends his time on where he can make money easily.
On the other hand Apple has created this market for itself, it took it away from Creative, settled with creative and has done much to its credit, where as I can't say the same for DVD Jon.
Double Twist iTunes Destroyer?