This story has been updated.In a crushing defeat for Aereo, the Supreme Court has ruled that the Internet-delivered TV service has violated copyright laws by capturing broadcast signals on digital antennas and selling them to subscribers for a fee.The decision is a major victory for the TV broadcast networks and TV station owners.In a 6-3 vote, the court said Aereo is violating the broadcasters' copyrights by taking the signals for free. The decision preserves the current TV industry structure, in which TV networks get carriage money -- called retransmission fees -- from a range of pay TV providers, including cable, satellite, and telco operators.Aereo’s claimed its service was no different than TV homes using an “antenna” to get free broadcast signals. It says its customers each have individual “digital” antennas for its service, where customers pay around $8 a month.Aereo’s service is available in New York, Boston and Atlanta, among 11 metropolitan areas.TV network executives were not all that worried about Aereo. Still, CBS and other nets said should the Supreme Court decision go in Aereo’s favor, they would likely turn into cable TV networks to continue to receive network carriage fees."Satellite Dish Antennas" photo from Shutterstock.