Huh, what sort of refusals are you getting? I basically never run into them unless I'm actively testing.

The primary safety focus these days is biochemical warfare, which I think is a very sensible idea. There's also malware / cyber-security, where I do think it's good having at least some friction.

Refusals on stuff like copyright are mostly just for PR reasons, and I can't blame the companies for responding to legal incentives there.