> But financial damage on programs distributed for free is…nothing.
Not necessarily.
For instance, if the program is distributed free for a limited set of purposes under a license, but available for a negotiated license (with payment) for other purposes, then the reasonable market value of a license without the restriction would be actual damages.
But financial damage on programs distributed for free is...nothing. So even if you sue, what are you going to get out of them?
I wonder if you can sue for some form of specific performance and cause them to remove your and all other equally licensed code from their training