The main reason that Amateur Radio has survived world wide is that it is largely self policing, which means that it has almost zero regulatory overhead. But fo

The main reason that Amateur Radio has survived world wide is that it is largely self policing, which means that it has almost zero regulatory overhead. But for Self Regulation to work, all ham communications must be in the clear. Once encryption was allowed it would take only a short time for commercial users to completely swamp the ham bands.