This strikes me as weird and unnecessarily convoluted. IMO the best solution would be to limit corporate held copyrights to 10 years after first publication or 15 years after creation, whichever is sooner, and limit individually held copyrights to the life of the creator. After that's up, the work becomes public domain, and people can freely post it without repercussions, meaning the masses will handle archival and distribution essentially without prompting. Simple, with very few loopholes as far as I can see.