From the inability of NASA and the DOD to reverse engineer their own tech from the 60s/70s, to the alleged humor that Blizzard has a bounty for anyone who can provide them with the original WoW code
Media storage is only as good as the hardware and the networks they support, time, corruption, and meat-space disruption will make it inevitable that vast amounts of data will be lost
'Internet never forgets' my ass
None of that stuff was ever released on the internet
here is the first released source code of the GNU project (essentially the first opensource project that forms much of modern Linux operating systems).
...from 1987