It's Not Bypass, It's Listener Choice
If bypass is going to be a problem, it is because listeners will choose to bypass local stations.
Why would listeners choose Morning Edition on the satellite and bypass Morning Edition on their local station? What would cause a donor to abandon the station he's listened to for six years and supported with cash for three? Why would a potential new listener choose a morning program void of any local information whatsoever?
Is the fear that listeners will be drawn away by something better or pushed away by something they don't like?