Well maybe people need to learn to be more persistent. I hate hearing that people can't make a difference, it's BS. I grew up learning that if you put your mind to something, then there's nothing you won't be able to accomplish. Maybe it's a more "rose colored glasses" view of the world, but I like to believe that people can change wrongs when they really try, and I'm not going stop believing that, and I'm not going to stop trying. I've gotten one walmart to stop selling bettas, another to put up proper care sheets and cut their shipments in 1/2, I've gotten numerous people who walked into a petstore with the intention of buying a betta and a bowl to walk out with a betta and some kind of 2.5 - 5 gallon aquarium, a heater and filter just by approaching them and striking up a conversation.
So don't tell me that it's not possible for one person to make a difference, because I know from experience that it is. And if more people believed that they can make a difference then more people would make a difference.