That is precisely what I want: if I released something as open source, I want it to stay that way. I do not want it to be used in proprietary software. Yes, I

That is precisely what I want: if I released something as open source, I want it to stay that way. I do not want it to be used in proprietary software. Yes, I am restricting freedom in a way, but only in cases when someone wants to take those freedoms away. In the long run, I ensure that my software remains available to everyone who doesn't want to take that freedom away. I am happy to exclude those, who would take my work and build it into proprietary stuff.