Everybody and their brother sued Google early on for a huge variety of their products. Google News got sued for showing headlines from news websites. Google Books got sued for copyright violations for, y'know, making a copy of everybody's books. Back in 2007, Google would've been in the middle of the the Viacom vs YouTube lawsuit. The whole idea of a search engine is fundamentally about taking all of the useful and mostly copyrighted content out there owned by others and profiting off of it by becoming the gateway to it.
OpenAI, similarly, works by taking all of the text and art and everything in the world, most of it owned by others, then copying it, collating it, and compressing it down into a model. Then they provide access to it in novel ways. I make no representation about whether it's legal or ethical. It's transformative, useful, novel, and really cool, but it's clearly taking other people's data, and then making it useful and accessible in a novel way.