Bogus statement - they are game only and available only WITHIN local markets. I quote directly from Echostar:
Now avid fans in these seven markets will have access to their home team's games in vivid HD and stunning surround sound.
Here is the complete Press Release:
EchoStar Communications Corporation - DISH Network(TM) Launches Regional Sports Networks in High Definition
You are correct. They are game only but not all sports have blackout rules. This would make them available to anyone who receives the channel. Also dish has more than 7 HD RSN channels