Not necessarily. They could allow secondary use as long as that use does not interfere with the primary users of a given frequency. Happens all the time.
Chris
Except that bandwidth is going to be used for things like super enhanced wifi and the like. When that becomes the norm, it's going to be at stadiums too. When forced to choose between the new applications that all that bandwidth opened up, and broadcasting sports to a handful of people at stadiums, everyone is going to opt for the new applications.
WiFi is very soon going to become an "everywhere" thing. Instead of WiFi hotspots broadcasting in terms of feet, it will be miles. Whole cities, states and even the country could have WiFi nearly everywhere. If you're gonna want to watch video at sports games, it's probably going to be over Wifi, not broadcast analog tv.
Broadcast analog TV is just over. It's like the telegraph. That's it. And idea and technology of the past.