Interventions can be a powerful tool to properly face addiction. Even with rehab and meetings, some addicts still refuse they have a problem. It does sound like he have a problem admitting that he's an alcoholic.
Just my two cents - I used to have a drinking problem in my late teens, until only a couple years ago. Nearly destroyed my life, and I was the only one to blame for it. However - I understand, have seen and have been in the situation. Addicts find it hard to admit they have a problem. I didn't have an intervention as such, but it was only when I basically hit rock-bottom is when I did something.
Your father needs to realise that he needs to face his problem or he'll lose a lot more than just your respect.
That is bad advice. It is not okay to be aggressive or violent as long as somebody makes money. My father worked a lot and kept our standards of living up, but I still resent him for having almost nothing to do with my life. Money does not make a happy family.