Because they thought it was too ‘woke’ and wanted to burn the books.

FWIW you can download it: https://en.wikipedia.org/wiki/Wikipedia:Database_download

Edit: Lots of good answers. When I ask the question I mean the main site. We would all have access to it. Hell I downloaded the text yesterday on two computers. I mean could the masses ever be denied access to wikipedia in the only form they are used to?