If you do what you've always done, you're going to get what you've always gotten.
Mass shootings are very common in our country. Virtually nothing has actually been done to address any of the suspected causes. I'm not aware of Congress debating the pros and cons of any proposed plans to address this problem.
Therefore, we should all be willing to admit that mass shootings will continue at about the same rate (or perhaps greater, since the causes have not been addressed) than before. Right? This is just basic logic. We should all be willing to agree on that regardless on where we stand politically or what we think are the causes of mass shootings.
So... is this something we are willing to accept? Gun control people actually have a plan. Maybe it will work, maybe it won't. NRA-types... don't actually have a plan, other than the slow arming of the entire population. If gun control isn't the solution, then what, pray tell, is?
Let's say you make a machine in a factory. Everything is going well until suddenly you start getting a lot of complaints from customers. The product is now defective. What do you do?
Common sense: You do more inspections... hire more people... fire some others... have stronger consequences for bad work and extra praise for good work… add some extra regulations... remove some other regulations... you do SOMETHING. You adjust the process and add extra oversight. You may do this indefinitely, but at the very least, you do this until the problem has been solved.
Regulation of some kind is generally part of the solution--both in the short and long term.