I know HN has something against Blockchain. But there are some really smart people working on the idea of a permanent web.
For instance https://www.arweave.org/ is based on the concept that you prepay for 200 years of storage but storage cost is decreasing over time so it's also like a future option on advance of technology.
I guess people also know IPFS i just didn't see it get mentioned.
And also i hope everyone here who cares about this topic is donating to the Internet Archive which also a solution.