I wrote this article for my site just over a year ago. I think it is still a very relevant thing as I still see most people online more interested in pushing people away than working together.
If you write a book, does that make you great at painting cover art? Probably not. Are all painters knocking work away with a stick? Probably not. Who not come together and both have something to show that is better than if you have stayed apart?
Sure, working together means that we may give up some details of what we wanted, but overall we should gain far more together than apart.