It was the easiest choice. In fact the only choice. With Genco dead, and Clemenza and Tessio running operations, the Don had no other choice. Sonny was the heir aparent, Michael didn't want in tht family business, and Luca probably wasn't consigliere material. That left Tom.
In the novel it is mentioned that Vito insisted that Tom studies law. So it had been a plan from Vito that Tom will be a consigliere, either to him or to Sonny.
Actually, law school was Tom's choice after hearing Vito state that lawyers can steal more than gunmen. Vito's insistence was that Tom put in 3 years of law practice.
"Generosity. That was my first mistake." "Experience must be our only guide; reason may mislead us." "Instagram is Twitter for people who can't read."
