> 2 is a killer. There's so much abandonware out there, either as full apps/servers or libraries. These can't ever really be patched. Previously these weren't really worth spending effort on - might have a few thousand targets of questionable value.

It's worse than that. In before, operator of a system could upgrade distro's openssl version, restart service and it was pretty much done. Even if it was 3rd party vendor app at the very least you can provide security updates for the shared libs

Nowadays, where everything runs containers, you now have to make sure every single vendor you take containers from did that update