>> ingest copyrighted work at very large scale and sell derivates of those works to gain massive profit / massive market capitalizations?

Entire industries exist dedicated to such things. News aggregators. TV parody shows. Standup comedians. Fan fiction. Biography writers. Art critics. Movie critics. Sometimes the derivative work even outsells the original, especially when the original was horrible or unappreciated. I have never played Among Us or the new Call of Duty, but I do enjoy watching NeebsGaming do their youtube parodies of them.