My experience is that significant distrust doubles the cost of doing business and triples the time it takes to get things done. ~Steven Covey
I have seen distrust drive CYA (Cover Your Ass) behaviors to shield against the wrath of the distrusted party, watched teams stall progress without the creation of exhaustive specifications detailing every possible contingency so decisions were eliminated from the equation causing work to be delivered per specification even when the results were obviously erroneous all so they would not be blamed.
Distrust drives countless, unnecessary emails and documented conversations to address minor issues that could have been resolved in the time it takes to exhale twice all because the team feared finger pointing. Distrust maims the human soul removing passion from the work. Worked performed without passion is excruciatingly slow, devoid of all innovation, and produces results the worker cares naught for. And customers receive products that will never mee their most basic needs.