Open-source projects still have to sell themselves to get users (marketing/"devrel"). curl's author definitely makes money from curl: https://curl.se/support.html
I'm not 100% sure why you're being downvoted. While the choice of the word "sell" kind of feels at odds with FOSS, it's honestly not an inaccurate verb.
Everything is an attention game, if people stopped using curl, then it would stop getting donations, and the author(s) would probably have to stop working on it as much. They aren't being "greedy" or anything, but they do have some level of incentive just to have a reasonable living working on curl.
tombert|4 years ago
Everything is an attention game, if people stopped using curl, then it would stop getting donations, and the author(s) would probably have to stop working on it as much. They aren't being "greedy" or anything, but they do have some level of incentive just to have a reasonable living working on curl.