Z:gnu-www-ja-is-ever-good-use-nonfree-program--e8528d-If you run a nonfree program o/en

If you run a nonfree program on your computer, it denies your freedom; the main one harmed is you. Your usage of it can harm others indirectly, by encouraging development of that nonfree program. If you make a promise not to redistribute the program to others, you do wrong, because breaking such a promise is bad and keeping it is worse. Still, the main direct harm is to you.