They did:Did the FCC or FTC ever crack down on the marketers of those plug-in doohickeys that promised reception miracles by using your house's wiring as a super-antenna?
And more recently against antenna manufacturers falsely claiming that their product will receive cable TV channels like HBO and for having (gasp!) "fabricated testimonials":
FTC Sending Refunds to Consumers who Bought Deceptively Marketed Indoor TV Antennas and Signal Amplifiers from Wellco, Inc.
The Federal Trade Commission is sending refunds totaling more than $580,000 to consumers nationwide who bought indoor TV antennas and signal
www.ftc.gov