Your definition is also vague. Someone still needs to do the legwork. One man armies who can do everything themselves don't really fit in standardized teams where everything is compartmentalized and work divided and spread out.

They work best on their own projects with nobody else in their way, no colleagues, no managers, but that's not most jobs. Once you're part of a team, you can't do too much work yourself no matter how good you are, as inevitably the other slower/weaker team members will slow you down as you'll fight dealing with the issues they introduce into the project or the issues from management, so every team moves at the speed of the lowest common denominator no matter their rockstars.