The possible fire:
Line side conductor faults to meter enclosure. Fault energizes conduit to panel inside building where main bonding jumper connect to GEC and grounded conductor.
GEC rod, water pipe, building steel have high enough resistance / impedence to not open over current devices at source of power.
Conduit from meter socket to main bonding jumper gets red hot. Source of heat is inside the building.
Bonding the meter socket to the grounded conductor would keep the fault from that point back to the source and outside the building.
It will not prevent a fire but, would keep it from being inside the building
Alan--
