Even when they do acknowledge this, though, I think they're kind of right. Freedom DOES include the freedom to take away others' freedom. But even if I think the BSD crowd is technically correct, I don't stand with them. Because I hold, this illustrates not a flaw in copyleft, but a flaw in freedom. It demonstrates freedom cannot be the highest moral standard. A certain baseline of freedom is a good starting point, don't get me wrong, especially in contexts where that baseline isn't taken for granted -- like the software world, where software is far too often proprietary. But freedom isn't everything.