I was thinking about this recently. I was gonna try an experiment where I make AGPL apps, release the source code ofc, but then published a 1-5$ version on the Google play store. There's the compiled version if you want, pay a couple bucks. If not, you're free to compile and sideload on your own.

Seems fair enough, similar to self hosted software that offers managed hosting for a price, or you can try to run the docker containers on your own or whatever. I do a bit of both, self host the non critical stuff, pay for the critical stuff.