I have about 100TB of Linux ISO's for precisely this reason. I think of it like the doomsday prepping of storing canned goods for the collapse. Instead I store media on hard drives so if the landscape of the internet changes in 10 years at least I can rewatch Frasier for the rest of my life.

I'm mildly short on HDD space right now due to hardware prices, but I want to hoard some local LLM models as well, again not for a current need, but just in case something changes.