[greffer]

> it is absolutely a fact that the GPL takes away some rights.

Expressing it like you did is misleading. One man's freedom is another man's restriction. It's two sides of the same coin.

It is absolutely a fact that laws against murder take away some rights. Suddenly you are not allowed to kill other people. You do not have that "freedom" anymore. Flipside is that others now have the freedom to walk around without fearing that they can lawfully be killed by others. You pay for granting one "new" freedom by removing another, opposing freedom.

The GPL grants new rights for a party by restricting rights of another party. Just like all licenses do.