That's not true for the vast amount of creative-commons, open-source and other permissive licenced content.
(Aside: the licenses and distribution advocated by many of the same demography (information wants to be free -folks, jstor protestors, GPL-zealots) that now opposes LLMs using that content. )
I'm sure GPL zealots would be happier about this situation if LLM vendors abided by the spirit of the license by releasing their models under GPL after ingesting GPL data, but we all know that isn't happening.
(Aside: the licenses and distribution advocated by many of the same demography (information wants to be free -folks, jstor protestors, GPL-zealots) that now opposes LLMs using that content. )