Because efficiency for one doesn't mean efficiency for the other. The business gets expertise on-demand without paying over senior rates, but the over senior pr

Because efficiency for one doesn't mean efficiency for the other. The business gets expertise on-demand without paying over senior rates, but the over senior professional doesn't have any real stability. It's a failure to unionize and negotiate the pay scales and progression, because it's basically a pipeline to force people out into uncertainty. Why participate then?