As the graph below shows, soft skills have a tremendous impact on the success of personal career building (Harvard University).
Startups are often founded and managed by people with excellent hard skills. Engineers, designers, and other specialists implementing their visions. Sometimes the lack of soft skills can destroy the dream as the team does not perform as it should.
If the CEO would focus more on soft skills it might have true impact on the way his management team works and thus directly to company performance.