It wasn't just Josh Harris. A team does not win with one player. Sure, recruiting helped, but well coached teams don't commonly make stupid and selfish mistakes. There is buy in to the process that is transferred from the coach to the players. That was the essence of BUGS success under Urban Meyer, not a single player. AND Urban Meyer is just a one-off example. There are many others.
As to your second paragraph, punitive actions as negative reinforcement are a last resort and should be rare. Establishing a positive culture that includes a vision, values, objectives/goals, and actions that are all part of a consistent narrative is the essence. Coach Porter of our men's soccer program was masterful at these things. Most leaders that are successful are as well.
We need to filter through the interview process to find that person, regardless of most of the rest of their resume. Before coming here, Coach Porter was little known and had been a very successful player but was probably not the front runner for the job based on his coaching resume alone.