2 spinning rust drive can store the library of congress. ~ 2,000 drives would store the web (1). How many millions of these drives get manufactured per year? Our technology systems are failing us - all those words are being lost, like tears in rain.
(1)Back of the envelope estimation: https://www.worldwidewebsize.com/ ~ estimates 50 billion websites, with some estimates ~ 6 pages of information per website. Let's say 1mb per page on average. So ~2,000 drives would store the entire web.
But stuff goes missing at Wayback because people don't agree to their pages being backed-up. Copyright, whatever. So it's like Global Heating, the tech is there, but people just can't agree. So 'pirate' backer-uppers go to jail. And island-nations and expensive ocean-side properties are being submerged. So it goes.
(In one case I was able to give back: bundling up the several scans an author had of a half-century old paper from their student days into a single, hopefully cromulent, PDF)
Edit: recall also that accepting that links are one-way and might be dead was the key simplification that allowed HTTP to take off after prior attempts at hypermedia had failed.