it is essential to collaborate due to 5 major reasons.
1-self awareness, it challenges you to articulate and distill what you are great at, and what you do poorly.
2-scale in other words 2 head are better than one. most effective problem solving happens when you combine resources in talent, experience, capital and infrastructure.
3- Creative abrasion
4- to take the long view
5- learn learn learn and learn some more.