motor and power factor

[HornTootinEE]

If we are talking efficiency, wouldn't it be correct to say that the idea behind pf correction is supply system efficiency improvement, not motor efficiency improvement? motor efficiency is governed by it's own internal design, the supply system efficiency is related to it's own design also. By adding a capacitor, we are designing our supply system to work more efficiently (less power loss) with the given load demanded by the customer...