Apple-as-kingmaker (a sort of frequent model in Mac development, incidentally) is not obviously advantageous to indie developers. It works fantastically for those who are turned into kings, but it also guarantees that 99%+ of the population will remain serfs.
I tend to think "gaming the App Store" is another way to say "giving Apple what they want". The problem is, well, Apple wants churn. (Or, if they don't want churn, they're incompetent, because they've designed a near-perfect system for encouraging it. I don't think Apple is incompetent.)
Pick your favorite useless app which costs $1 and only hold's someone's attention for a day, while they show it to friends to say "Hah, look what I can do with my iPhone." Maybe your favorite example is farting, or a flashlight, or jiggling various bits of the anatomy, whatever. Whatever it is, if it causes someone to talk to their friends and say "Hey guys, look what cool things I can do on my iPhone which you can't do with your lame phone" then that app is anything but useless to Apple.
Many people think that the App Store sells applications. To quote the best line of a bad fantasy TV show: That is its function, but not its purpose. Its purpose is to sell iPhones.
(Ditto for iTunes.)