The framing of 'share your weights freely' as a remedy is interesting but underspecified. The FSF's argument is essentially that training on copyrighted code without permission is infringement, and the remedy should be open weights. But open weights don't undo the infringement -- they just make a potentially infringing artifact publicly available. That's not how copyright remedies work. What they're actually asking for is more like a compulsory license, which Congress would have to create. The demand for open weights as a copyright remedy is a policy argument dressed up as a legal one.

In GPL cases for software, making the offending proprietary code publicly available under the GPL has been the usu outcome.

But whether you can actually be compelled to do that isn't well tested in court. Challenging that the GPL is enforcable in that way leads you down the path that you had no valid license at all, and for past GPL offenders that would have been the worse outcome. AI companies could change that

> The framing of 'share your weights freely' as a remedy is interesting but underspecified. The FSF's argument is essentially that training on copyrighted code without permission is infringement, and the remedy should be open weights.

Ignoring the fact that the statement doesn't talk about FSF code in the training data at all, [0] are you sure about that? From the start of the last of three paragraph in the statement:

  Obviously, the right thing to do is protect computing freedom: share complete training inputs with every user of the LLM, together with the complete model, training configuration settings, and the accompanying software source code. Therefore, we urge Anthropic and other LLM developers that train models using huge datasets downloaded from the Internet to provide these LLMs to their users in freedom.

[0] In fact, it talks about the inclusion of a book published under the terms of the GNU FDL, [1] which requires distribution of modified copies of a covered work to -themselves- be covered by the GNU FDL.

[1] <https://www.gnu.org/licenses/fdl-1.3.html>