nah, if that was the case they would be more intelligent
its amazing how much a single good person can change a shop though, one local store that I know was really bad for a while, then they got a couple of good people in, they improved heaps, I think at least one has left though as its beginning to slide again.
unfortunately profits seem to rule in this industry. funny thing is it doesn't cost much money to spend the time required to keep your fish properly.