An entertaining aspect of this is in whiskey, where, for instance, Wild Turkey makes one of the more successful and appreciated bourbons on the market, but also has a very popular rye, which they don't distill: Wild Turkey Rye is a relabeled MGPI whiskey. A surprising number of whiskeys are MGPI.
Because bourbon takes (something like) ten years to "age" if you want to start a bourbon distillery you either have money to run ten years with no product, or you white label something else for ten years until you get your own going.
So many industries are like this, just out of sight of the average customer, it's hilarious.
