I mean, it's hardly comparable, but back when I came online for the first time, I played a browser game. (My nickname is from that time).
The game was developed by someone as hobby. In order to compensate for the infrastructure he asked for donations.
Within the game was an always visible bar, that „the server would continue to run for N more days“ unless money comes in. If the bill was covered, there was a Thank You note instead.
It was effective.
@RyunoKi @downey @jens @josh crowdfunding for people's passions and perceived utility does work.
We see it with OTW (Archiveofourown.org), Wikipedia Foundation, even Newspapers.