For the store I sort-of understand it, it's a store after all, the only purpose is to extract money from customers (in exchange for services/goods), and with a non-physical store the only real distinction you can make is how high at the top of a list your product sits. That said, I don't really use it that often anymore as I already have all the apps I want or need. Perhaps also why I tried the arcade a while back but didn't really end up using much of it for long.