@dalias @quarknova I mean, forks could exist.
Forks wouldn't have a deal for big tech to opt out of share-alike, so we could conceivably see better stewards for this repository of knowledge than the Jimmy Wales crew.
As it is, contributing directly to Wikipedia constitutes a tacit acknowledgement of a rejection of the license that your contributions are nominally contributed under; Wikipedia has opted you out, even if you haven't.