Much of the problem is simply a lack of tools to handle the process in a timly manner, that also assure that something will happen and that is sufficient to stop any legal actions.
Why not add a magic word for __NODOWNLOADLINK__ so a template about deleting an image due to copyright will sort of protect it agains reuse. That way the community has taken prompt action to protect the authors interest, and started the process of figuring out the rationale behind any claim. I'm not sure but I think the necessary response time then will be weeks and not days.
If it was some kind of log when specific magic words, categories or templates were added to or removed from a page, and it were possile to filter this log on time, then only overdue entries would show up. Such a log would probably represent a pretty small load to the system and it could even be managed from a worker process so it won't hinder the normal rendering of the page after edit.
This would create the necessary tools to assure that there is a process to handle copyright infringements, even if the process would run over weeks or months.
Add a magic word to enforce "enotif" on specific templates and the whole process shold be a lot more easy to handle than today.
John