Given how LLMs are trained on its data, it's travesty to prevent the public from accessing it all the same.
I'm thinking it should be distributed using physical media given it's size. A 20 volume encyclopedia on hard drives? We used to do this when the internet was too slow back in the day. I've had friends give me anything from pirated encyclopedias to MSDN docs on CDs. if enough people have enough of the volumes, they could seed and keep it going. But if only a handful of people have the actual data, it's a matter of time before it's taken offline for good.