Pretty much, Ricky. Management becomes a bit of a self-fulfilling prophecy that way. Mourinho went to Porto when they had the country's greatest generation of players ever coming through. Then to Chelsea who were the richest club in the world. Then to Inter who thanks to the Calciopoli and Morratti's wallet had more or less every great player in Italy. Then to Real Madrid. They all wanted him because he's a top manager, but everyone wins titles with those clubs. Managing them is about prestige.
A more interesting question is if he could have done this to Atletico Madrid, like Diego Simeone has done. I don't think he could personally. He's never been that type of manager.