Actually, I'm sure there are a bunch but as I said, those are the ones that probably aren't going to take care of the fish anyway since they aren't concerned enough to learn anything about them. At least with other fish, you can ask questions before selling them so that they don't end up with 4 oscars in a 10 gallon tank. Although I'm sure there are way too many stores that would sell them without ever asking a question as to what they panned to kee them. That's pretty obvious by the number of goldfish that are sold for a gallon bowl. I think it once again goes back to the attitude that most people have about fish. To them, it's ust a fish. Big deal if it dies, they'll just get another one.You'd be surprised Rdd how many people come into the shop and assume that fish can be kept in small tanks, especially Bettas.
Maybe part of the problem is that fish are too cheap. If you think about it, we spend a $30 to $50 on a good sized betta setup and then put a $4.99 fish in it (unless you're buying from a breeder and paying the good money). Maybe if bettas at the LFS were $20+ people would think and research a little more before buying one.