&gt; And to preclude modifications which prevent him from effectively monetizing his labour is to infringe on his freedom.<p>This sounds a lot like the people saying that adblocker software is infringing the freedom of people trying to monetize their websites (or maybe even &quot;stealing&quot; from them). And I think the same response applies: the fact that your business model isn&#x27;t compatible with adblocker software, or with my choice of software license, isn&#x27;t my problem.<p>Plus it seems extra presumptuous to claim some kind of inherent right to profit off derivative works of <i>my</i> software. You can only distribute derivative works of it at all because I&#x27;ve granted you a license. A royalty-free one at that! With the only condition being the copyleft condition: that you keep any derived works as open as the original. If you don&#x27;t like that condition, we can negotiate a commercial license on whatever terms you want, with appropriate payment. Or you can write your own software...