In Fish-in-a-barrel situations like a concert venue with high fences or otherwise enclosed spaces there’s not much to be done.
Most venues don’t allow firearms except for authorized personnel even in gun friendly states.
When you consider just HOW MANY fish-in-a-barrel situations there are on private properties and just how RARE situations like this are, it’s not likely that venue owners (holders of real estate and insurance for the property and its use) will change their ways.
Hotels will have to grow up though.
I’m not using it as an example of why people can’t defend themselves. I’m just stating a plain fact about venues in the USA.
I’m not advocating for more or less of it, just that it’s there.
It’s nearly all of the concert venues though. Insurance. Liability. It’s private property. Managing a venue can’t be easy. Things happen, beyond firearm situations. There’s fires, stampedes, etc.