How is this different than, “I read a scientific paper, and unlocked millions of dollars of value, and all it cost was $250 for 8 pages of text. So I guess Axel-Springer is a public good.”?
Just buying and selling something doesn’t make it a public good. Valuable sure, but selling something for a profit makes it by definition not a public good.
Relying on a system to say that you are not charging correctly sounds rather like UK's Post Office Horizon system and we know that ChatGPT will hallucinate things,