ninetyninenine parent
I mean the human brain can memorize things as well and it’s not illegal. It’s only illegal if said memorized thing is distributed.
Humans can only memorize such few texts in comparison so they'd not be scallable in the same sense LLMs are.
Humans don't scale. LLMs do.
Even if LLMs were actual human-level AI (they are not - by far), a small bunch of rich people could use them to make enormous amounts of money without putting in the enormous amounts of work humans would have to.
All the while "training" (= precomputing transformations which among other things make plagiarism detection difficult) on work which took enormous amounts of human labor without compensating those workers.