Really good point, and great reminder that I don’t appreciate Wikipedia enough. They’ve been doing the same thing for 20+ years with no ads and only the occasional ask for money. And I think they know better than to try and make money or go public when all of their content is user-generated.
I used to YouTube-mp3 a lot of music and then go through the very annoying process of renaming all of the files and moving them to itunes. After about the 6th time my favorite (or newly made favorite) site got removed by DMCA, I gave up and moved to Spotify. They had a 3 month free trial and I marked my calendar to cancel when it was over. When that day came I was like, lol, never mind. It was so much less hassle and less riddled with viruses and ads.