Every circle in the cylindrical projection below is the coverage area, or footprint, of a Globalstar satellite flying overhead at the centre of the circle and looking down for signals. All but the highest latitudes are completely covered. 48 operational satellites provide this coverage - the full constellation as originally planned. The footprints move over the earth. There is no orbital seam.
Coverage requires a terrestrial gateway in or near a footprint.
The financial market is going to determine all of this. At some point, we may exhaust the opportunity associated with satellite communications.