Z:gnu-www-ja-rms-nyu-2001-transcript--39ab98-And yes, that's what using a n/en

And yes, that's what using a non-copyleft license leaves you open to. In fact, the X Consortium, they had a very rigid policy. They say: If your program if copylefted even a little bit, we won't distribute it at all. We won't put it in our distribution.