No docker is not virtualisation, the poster below is talking about docker for desktop which is a nice gui wrapper around it in a VM, but by definition docke itself does not use any form of virtualisation. If you had a modern Linux server you can install any of the container runtimes, e.g. docker, podman to run containers or something like K3S which is effectively a lightweight kubernetes if you wanted to run a lot of different containers and have a central way of managing them
My concern is why would it put them out of business? If we just look at legal porn there is already beyond huge amounts already created, and the market is still there for new content to be created constantly. AI porn hasn't noticeably decreased the amount produced.
Really flooding the market with CSAM makes it easier to consume and may end up INCREASING the amount of people trying to get CSAM. That could end up encouraging more to be produced.