I wonder what gay and lesbian employees of Google think of this. I haven’t heard one breathe a peep over the fact that any TVTropes page with the slightest gayness is behind a filter. Censorship, it’s insidious.
But! That’s okay! You’ve all got mortgages.
TVTROPES IS THE UNIVERSAL COUNTEREXAMPLE. YOU CANNOT ADVOCATE ADS ON WIKIPEDIA WITHOUT A KILLER CASE FOR WHY THIS WOULD NOT HAPPEN TO US.
Wikipedia having ads would be the worst possible move for the mission: “Imagine a world in which every single human being can freely share in the sum of all knowledge. That’s our commitment.”
No advertiser in existence would stand for that in practice.