Is NitroTV a Legitimate Alternative to Paid Services?

Carlos would like to cut the cord with DirecTV, but he has 2TB of movies on their service. How can he get them?  Is NitroTV a good deal? Leo says that NitroTV is an over the top service, and it sounds a bit suspicious. They charge just $20 and you get everything including premium channels? How can that be when HBO charges $15 a month? And they're offering all channels for no extra charge? No way that isn't piracy.