Using the word “extract” seems misleading to me. It has connotations of removing something, or exploiting scarcity. When we extract water from the Earth, there is less there for others to use. But in this case nothing is being removed from the code they trained on. I don’t mean to have the argument devolve into mere semantics, but I really think the use of that word demonstrates an assumption about the issue: people are perceiving a loss to the folks whose code was trained upon.