It doesn't unless its wide enough to let you be more effective with limited quarantines.
The CDC or WHO testing kits have been produced at scale. But the CDC version had flaws in one or two of its reagents that rendered other labs unable to verify that the tests worked properly. Those had to be redone and there was a three week delay.
During those three weeks, all testing had to happen in Atlanta at the CDC, which is not designed to handle that kind of throughout.
Three weeks took you from containment and mitigation to suppression. Having a backup plan would have been good.