>He emphasized that he has released curl under a free license, so there is no legal problem with what these companies are doing. But, he suggested, these companies might want to think a bit more about the future of the software they depend on.

There is little reason for minimal-restriction licenses to exist other than to allow corporate use without compensation or contribution. I would think by now that any hope that they would voluntarily be any less exploitative than they can would have been dashed.

If you aren't getting paid or working purely for your own benefit, use a protective license. Though, if thinly veiled license violation via LLM is allowed to stand, this won't be enough.