Since that was the focus of the judge's ruling, I would guess the future expansion of Locast is what is really in jeopardy, more so than continuation of service in existing markets.In Locast's case the net profit is used primarily to expand the service to new areas.
If current Locast users are located within reasonable OTA reception distance from their local broadcast transmitters, the loss of the service should not be as much of a problem as it would be for those whose only other option for locals would be a paid Cable, satellite, or streaming service.