That's the commonsensical position, but that assumes some kind of social responsibility that as far as I can tell doesn't exist in that part of America. A dozen children murdered in a school prompts a response of "what does that have to do with me?" The gun lobby does not see themselves as having any kind of real responsibility for addressing the problem. They may not even see it as a problem. Even the really wacky solutions (armed guards in every school! bunker architecture!) they don't want to actually pay for.

Then there's the part of the gun industry that sees gun crime as a means to sell more guns to people concerned about gun crime. Rather like the international arms trade, there's lots of money in provoking conflict so you can sell to both sides.