> What do people imagine can be done about it at this point? Offer a concrete suggestion.

Simple. Free the companies from copyright liability, but after X amount of time they are required to release everything into the commons. The weights, the training scripts and the full training data (appropriately processed so that it can only be used for training and not for people to easily pirate whatever works were used). They'd still get a monopoly on their model for a little bit to recoup their training costs, but in the end would be forced to give back what they took.

I'm sympathetic, since I think copyright laws are far too extensive and generous. But it's not simple, there are a lot of companies that won't fall under your jurisdiction, and the question is if that will give them a competitive advantage that kills the industry for you, and ultimately costs you more than you gain.