I don’t think “will” or lack of it has anything to do with mass slayings. If anything, the reserve could be argued. Hitler an Stalin spring to mind. Many simple cultures don’t exercise “will” in the cultural sense referred to, and yet don’t suffer the same cultural ills. I also don’t believe making guns too expensive would be a practical solution. You may as well just ban guns, if you are going to do that. The focus should be on an immediate solution to prevent callous killings. Gun control is as clear cut as any solution to address that problem. Apparently, 90% of Americans believe that to be the case. Yet, the legislation that was to bring about greater gun control failed. So whatever you think is the problem or likely solution, you are possibly going to be denied the means do deal with it, if your detractors are more powerful than you. I think that is a concern and needs to be addressed before philosophizing.