> But as long as it continues to exist, some future civilization could figure out how to read the data again, eventually. Just like we eventually discovered how to read ancient languages that were once forgotten.

Eh, I think you're vastly underestimating how difficult that would be.

1. The media would have to last hundreds of years at least, when it's hoped modern archival media can last maybe fifty.

2. Even assuming the media did last, the new civilization would have to reverse engineer encoding on top of encoding on top of encoding (e.g. physical disk encoding, complex filesystems, file formats, character encodings). Our civilization already has trouble reading some old file formats, and our disks already have trouble reading their data (which is why they pack a ton of error correction information).

It took the Rosetta stone to figure out how to read encoding of Egyptian hieroglyphics, when that language was still alive in the form of Coptic.

3. Then you're dealing with the probability that the hard disks the future archeologists find will even have a Wikipedia dump on them. That probability will be very small, given very few people will download these dumps.