It was Vito who chose the Mafia way for him
I don't think “Michael actually wanted to be the Donâ€
No doubt he liked the absolute power of being the Don afterwards but I reckon he was a reluctant Don, had no aspiration of “becoming Don†which was thrust upon him because of Sonny's assassination and Vito's desire to make the Corleones top Mafia family again
He was tutored by Vito longer than a year for Donship
What choices and alternatives did he have at every step of his ascent to the Donship?