I'd say they're banking on the horse having bolted by the time such a thing might happen (i.e. courts would need to force 1000s of very large powerful companies to pay millions of people - an insurmountable legal effort).
This is less about AI, per se, and more about corporate -vs- personal IP rights. Historically, IP law has bent to benefit large corporations while citing personal IP rights as the raison d'être (& never fulfilling on that justification). What OpenAI (& many others) are doing here is just very flagrantly demonstrating how that justification was only ever an excuse, & that restrictions imposed by the Berne Convention, et al, have never really applied to corporations at scale (outside of small case-by-case exceptional examples).
The livelihoods being stolen are not being stolen by AI - rather it's a further reinforcement (scaling up) of a system that has been doing so for well over 100 years.
This is literal Luddism.