The airwaves belong to the people of the USA, not DirectTV or others. The FAA has set aside certain bands for Police, Emergency, Air, and other specific authorities. I don't think any bands were set aside for these providers. They may be licensed to USE them, but they do not OWN them. If you put a conversation on the air; you should expect it to be listened to. If you read your wireless phone, there is a warning that explictly states that your conversations may be monitored.
What if I develop a signal that goes outside of, over, around or between the currently recognized "spectrum," is it mine or does it belong to the people of the USA?