Collaboration is about complimentary skills melding together harmoniously to enhance the effectiveness of the outcome. On the partnership scale it's about a meeting of minds that, when it works, can change the world. On a much larger scale, it's about internally engaging the natural talents of your workforce for inspiration, creativity, problem solving, multiple perspectives and insights.
When the big problems a company face are taken care of via big-picture collaboration, the smaller problems tend to disappear. There's a reason that working in silos is less productive for human beings; we have evolved as a collaborative species. We work better when we do it together. And we need each other in order to enhance the effectiveness of the outcome.