Allen Iverson got criticized by the media for “letting down his teammates” for skipping a few practices. He famously said “We’re talking about practice, practice! not the game! How is MY going to practice gonna make THEM better?!” He got flack for those comments, but what he said was accurate. If we’re talking about outcomes you’re beholden to the person who is seen as the difference maker, all the teamwork in the world isn’t going to improve an individual’s the lack of ability.
For an alternative perspective, I recommend the business book The Captain Class.
If you aren't making your teammates better, and they aren't making you better, you will never be able to be as good as a team that is greater than the sum of its parts. Individual genius is consistently beat by professional collaboration.
Consistently? You don't know that. There are just as many successful one-man shows -- with the important caveat that they lack redundancy.
Every company depends on 3-5 guys for their competitive advantage. While the other thousand guys are interchangeable, they're just as necessary (and needful) to the company's survival.