Well, for one thing there was an old man back in Maranello who demanded excellence and accountability.
Scuderia became a legend becAuse it was simpler to race back then. A driver a car no tire management, little to none input from pit lane. Nowadays, to be a Champion one needs 700 people to perform perfectly, and that depends on the culture of those 700 people, some cultures are better than others on organization, precision, procedures etc.