It’s because a barter system is inefficient and only advantageous over a monetary system when the money cannot hold its value predictably. 1) The dollar is far more stable a predictor of value, since any barter system would be new and hence difficult to predict.ubmit. · just now. Report Abuse. barter system is the system of exchanging goods and services for goods and services. and it has failed because of inappropriate measurement ie it will be hard to measure how to exchange a cow for a chair.