Not necessarily..in hilly, rural areas, or in the mountains of Colorado, for example? When the nearest tv station is 200+ miles away, I could imagine not picking up much of anything. Distances are vast in the West and many states don't have very many cities big enough to have TV stations....look at a map of any of the southwestern states--I'm sure there are rural parts of Montana, Utah, Nevada, etc that can't get anything without a dish.
I know in rural, hilly eastern Ohio when the dish is out my Mom only gets two channels w/ a rooftop antenna--both of which are about 50-70 miles away..can't even pick up Akron or Pittsburgh channels.