People typically point to the Jordan-Pippen combo when talking about the Bulls dynasty. That's obvious. But the guys who get overlooked are often the key. John Paxson, Horace Grant, Bill Cartwright, B.J. Armstrong, Will Perdue, and Scott Williams: Was winning three rings a matter of "right place at the right time"? Maybe.
I think it's more than that. These guys may not be Hall of Famers, but they have high basketball IQs, they're willing to do what's required of them, they bring energy, they're able to focus on team goals, they make few mistakes, enjoy competing, and are reliable.
Look at the rosters of championship teams. You'll see that they're loaded with guys who fit this description.
Yes, the teams with the best players usually win. How you define "best players" is the trick.