Power
No one gets into this gig for the power.
Okay, maybe not no one, but no one with any clue about how to get power. There probably is some kind of weird supervillain scheme aimed at getting power with this career, but it'd be extremely illegal.
Your power will only be felt as a tastemaker. We mean that literally. Since you're the one selling liquor, you're the one determining what liquor gets sold. So let's say you like one brand and not another. Well, that one brand you like is the one that will probably go to your clients. You're not bankrupting any major labels, but if you find a small one to champion, you can certainly help them out a great deal.
This is not a career for people who want colossal, world-shaking influence. This is a good spot for sales people who like booze.