Whey vodka

The Oregon Creamery Making Vodka From Milk – Atlas Obscura:

His work showed that a cheesemaker selling cheese for $40 a pound could, with a proper fermentation system, make half again as much in retail sales on alcohol. In the last several years, he says, he’s been approached by more than a dozen creameries from across the country looking to ferment their whey into alcohol.

This is great and all, but why wouldn't you turn it all into brown cheese?