You're not training it from scratch, though. There are people, enthusiasts, doing it for you. I can fire up LM Studio and browse through thousands of models to then have a conversation with, or have them write stories, etc., etc.

As for "nothing of economic value" - that's, again, just plain misunderstanding what AI can be used for. Corridor Crew - a VFX team publishing on YouTube - used self-trained AI to boost their film making options. For example, to copy the "bullet time" effect from The Matrix, they were able to use around a dozen cameras instead of hundreds, and then used AI to create the "in between" frames.

How does that have "no economic value", mate?