What the FTC said:
"Conduct that may violate the copyright laws––such as training an AI tool on protected expression without the creator's consent or selling output generated from such an AI tool, including by mimicking the creator's writing style, vocal or instrumental performance, or likeness—may also constitute an unfair method of competition."
Artificial Intelligence and Copyright, Comment of the United States Federal Trade Commission, before the United States Copyright Office, Docket No. 2023-6 at 5 (October 30, 2023).
What the FTC meant, as explained by Cybertoonz: