I'll add my own anecdote. I have donated to Wikipedia sporadically over the years, and they asked me to take part in a sort of round table interview / qualitative study.

In a room of other Wikipedia donators, maybe 1/3 of the people there didn't know that the information was entirely community driven, and when they learned, a handful of didn't think it was a good idea!

It just shows how much Wikipedia is just taken for granted, when in reality so so much effort goes in to keeping it free, ad free, open, and accessible to everyone.