My key point was that I'd personally prefer opt-out targeted advertising for two weeks out of the year to what Wikipedia has right now.
I doubt it would make as much money, though, so it's irrelevant. Advertising can make a lot of money, but if it's opt-out and only lasts two weeks, I can't see it rivalling a fundraiser. The results of our fundraisers are measured in the millions, could we really get millions from two weeks of ads?