How could it be possible that a business man would kill the son of one of the most powerful men on earth at the time.

Vito Sr. wasn’t in jail for life and the grandfather was still alive and well acting as a proxy for his son.
Killing Vito jr did NOT wipe away his debt.

So the motive does not make any sense.

Now a dumb mother fucking,
Pants are Sagging, Braided Hair, Gang Member/Leader them guys will kill anyone for a few dollars.

I do mean ANYONE.