Taking other people’s creative works to create your own for-profit product is illegal in every way except when AI does it. AI is not a person watching videos. AI is a product using others’ content as its bricks and mortar. Thousands of hours of work on a project you completed being used by someone else to turn a profit, maybe even used in some way you vehemently disagree with, without giving you a dime is unethical and needs regulation from that perspective.