In my experience, very, but it’s also not magic. Being able to package an application with its environment and ship it to any machine that can run Docker is great but it doesn’t solve the fact that modern deployment architecture can become extremely complicated, and Docker adds another component that needs configuration and debugging to an already complicated stack.
Professional athletes also have some of the strongest unions in the country, since they’re a small group of practically irreplaceable workers, and many of the league structures are the result of collective bargaining between players and owners.