A lot of people confuse teamwork and leadership. Like I said this is a bit off topic, but since Bosco is young and his intentions are obviously good I thought it worth the post. In the business sense I am an "eagle". I made other people significant money in return for guidance and mentoring, built my own companies and in turn mentored over a dozen others who now run successful businesses. Teamwork evolves from leadership and leaders march to their own cadence. I would hazard to guess that a significant % of the lone rangers bosco refers to are reasonably successful IRL. That in no way is meant to imply that others who play differently are not. I just know from personal experience that most "eagles" I've met gravitate to individual recreational activities like golf, flying, motocross or other individual types of challenge. True teamwork flows from leadership not interaction. As one of my personal mentors often said...if you need to look back to check if they're coming then your just wishing...not leading.
I have run a couple businesses myself.
While i understand where you're coming from with you're statement. I would just like to say this No 1 person makes or breaks a large co. and when i say large company I'm talking about having employees in excess of 50 people.
Which BTW in the Grand Scheme of things is a very small Co.
The Co's I work with now are Fortune 100 Companies with thousands of employees.
I can tell you this No 1 Person is responsible for thier success or failure their leader can only affect that not insure it.
Ultimately what you said holds water but does not and will not insure success.
Leadership Combined with talent Does.