[WorldMaker]

Stack Overflow was developed as (and is still operated as) a for-profit/profit-motivated Corporation (Stack Exchange Inc.). No one considers it a DAO in any form, especially not the "autonomous" part. Unless you mean the gamified community elements, but you can't really call that an "organization" either because it's entirely disorganized (and sometimes highly dysfunctional) beyond the game mechanics and more importantly extremely centralized to Stack Overflow's servers.

Wikipedia is run as a not-for-profit Foundation (Wikimedia Foundation). It doesn't seem anything like DAO either. Again, unless you mean the community of contributors to Wikipedia, and that also is extremely centralized to Wikipedia servers and doesn't have anything resembling "autonomous", not even something resembling Stack Overflow's game mechanics.

The "autonomous" in DAO still only means "smart contracts" and no one is using DAO as a term for traditional corporate structures other than those intentionally confused by or wishing to confuse what "autonomous" means in the acronym.