If the Federal Watchdog Office Works for Contract Protestors, Why the Decline?

According to an article posted in the Federal Contracts Report, several reasons could explain the decrease in bid protest filings in 2017 despite an “effectiveness” rate showing that the Federal Watchdog office regularly provides relief to contractors.
 
There has been a 7% drop in filing bid protests in fiscal 2017—from 2,789 to 2,596—and there are various reasons available as likely explanations; including but not limited too, the disqualification of overly enthusiastic protestors, raising the minimum contract value threshold for valid protests, and reliance on the U.S. Court of Federal Claims.
 
This drop occurred despite the GAO’s 47% effectiveness rate for protestors. The rate comes directly from instances in which protestors convinced: 1) the GAO to sustain a protest; or 2) an agency to fix a procurement error with corrective action. With the effectiveness rating remaining constant over the last two fiscal years, and its gradual increase over the previous five fiscal years, it appears that contractors are becoming more selective when deciding when to file a protest. For more information see the Federal Contracts Report Vol. 108, NO. 19, 474-475.