You know looking it over again I guess my brain corrected a few things to make it more intelligable. I assumed archive meant the internet archive, corrected "how" to "now", and assumed they were talking about Warner Brother's IP rights. I can see how you were confused, but maybe don't phrase it like that next time lol.
Someone managed to install Firefox from 2008 on a modern system using Nix. Crazy cool: https://blinry.org/nix-time-travel/