I just read this article. To quote:
Open source software had its origins in the free software movement. By now, most open source users understand that free refers to freedom, not to price. The new lesson is that the freedom belongs to the software, not to users. You are not free to do whatever you want with the open source software and may find yourself in a legal fight if what you do restricts the freedom of the software. (ed. emphasis mine).
Okay, this isn’t strictly true as it’s really referring to Free Software (GPL) rather than Open Source which includes BSD and MIT licenses which are less restrictive. After all you can pretty much do what you want with BSD and MIT licensed software including taking it proprietary.
Of course you’ve never been able to do what you like with Free Software. (more…)