As a thought experiment, let's say I pirate enough ebooks to stock a virtual library roughly equivalent in scope to a large metropolitan library system, then put up a website where you can download these books for free. I make money on the ads I run on this website, etc. This is theft, but as "compensation" I put some percentage of my revenues into funding a UBI study that might, if we're lucky—in half a century or so, in a progressive, enlightened version of the future we are by no means guaranteed to realize—make a fractional contribution to the thrust of a successful UBI movement.
Does that make what I'm doing okay? Should all those authors deprived of royalties on their work now, even deprived of publishing opportunities as legitimate sales collapse, understand my token contribution to UBI as fair compensation for what I'm taking from them?
That to me is a joke, and the only difference between it and what OpenAI is doing is that OpenAI's product relies on a technical means of laundering intellectual property that seems tailor-made to dodge a body of existing copyright law designed by people who could not possibly have conceived of what modern genAI is capable of. We will see what our lawmakers and courts make of it now, but either way, making a promise to pay me back later does not justify you in taking all the cash out of my wallet without my consent. Nor, for that matter, does tearing it up and returning it to me in the form of a papier-mâché sculpture of Shrek's head protruding from the bowl of a "skibidi toilet".