I can’t speak for anyone else but myself, but I would. I am more than willing to pay for a good OS and good applications, especially if they are FOSS. I know FOSS tends to be free-as-in-free-beer even though that is not what the acronym means, but I have thought that the lack of funding in FOSS can cause some problems (and avoids some problems too). I plan to start donating to some projects I use personally soon.