It is actually about fairness. Commerce is a fundamental fact of life and for many projects an opensource approach just doesn't work, this a lot of people have

It is actually about fairness. Commerce is a fundamental fact of life and for many projects an opensource approach just doesn't work, this a lot of people have to opt for closed source for business reason, but the very same people would like to leverage libraries and "open software". I do. And this is why everything I publish publicly is under a permissive license.