>The developers most certainly aren't by any means entitled to make money from PICO-8;
And you aren't entitled to get stuff for free. Its their work and they should be paid for it. I agree in that I wish it was open source, but its unbelievably difficult to make money on an open source project. Very few projects succeed, and only if they become mainstream. Even then its not guaranteed...look at the financials of GNOME and KDE.
https://lunduke.locals.com/post/3983662/major-open-source-projects-how-much-mone...