>The result would be a system that you could not count on for any purpose. For each task you wish to do, you'd have to check lots of licenses to see which parts of your system are off limits for that task. Not only for the components you explicitly use, but also for the hundreds of components that they link with, invoke, or communicate with.
>How would users respond to that? I think most of them would use proprietary systems. Allowing usage restrictions in free software would mainly push users towards nonfree software. Trying to stop users from doing something through usage restrictions in free software is as ineffective as pushing on an object through a long, straight, soft piece of cooked spaghetti. As one wag put it, this is “someone with a very small hammer seeing every problem as a nail, and not even acknowledging that the nail is far too big for the hammer.”
https://www.gnu.org/philosophy/programs-must-not-limit-freed...
Would you require the FSF to accept a sponsorship from anyone and to advertise them in return?