There have been internet distributed file systems, but they tend to be very slow, availability can be patchy, and the capacity ordinary users could contribute wouldn't be anywhere near enough for an internet archive.

I mean I have no real problem with paywalls, the people who run the thing have to pay their people somehow else the whole landscape will just be propaganda that someone is willing to subsidize. But at the same time I won't say that archive.is is some kind of awful malicious horrible-man.