Aereo is not violating anything but they should have prepared for something like this. Absurdity is common when you are trying to provide similar service to the consumer in a better way without creating monopoly.
In what other sense could they have been prepared? They fully expected to end up in the courts, likely through the supreme court, and planned appropriately. They lost the case, but it doesn't seem to be for lack of preparation.
For the record, I work at a company with a lot of former Navic Networks employees (the company Chet Kanjoia founded before Aereo) so there's plenty of talk about Aereo and I'm pretty familiar with their model.