Well, it's the problem for maybe 1% of developers (to pull a "sufficiently tiny to make my point, but still made up" number out of thin air).  There is still plenty of money to be made that doesn't conflict with the default functionality of the iPhone.<p>Don't get me wrong, I'd rather there was no filtering at all and there was instead a sort of "paid apps have the option of getting Apple Certification and being listed at the top of all lists" option instead, but I don't think the App Store problems outweigh the benefits for users.