Very true, especially as the FSF has been so instrumental in creating and encouraging the creation of free software. While the FSF have "been against" non free software they have at least helped provide the alternative. In the case of DRM, not so much.
GPL and other licenses are the alternative. The only functional difference between a license and DRM is that enforcement is in the hands of the rights holders until the DRM is broken. GPL is hoping no one steals it. DRM is trying to keep people from stealing it until you make enough to cover expenses and some profit.
