One market where SKU proliferation is very evident is the kind of food that we feed our pets. Most of us have been perhaps familiar with food that is targeted to small, medium, and large breeds - or food targeted to puppies, adult, and older animals.
What is perhaps unfamiliar are foods that are targeted to specific breeds.

Does your terrier need a food formulation that works best for their particular metabolism? Some manufacturers think so.
And the existence of items like these is driven by the fact that consumers think so too.
But we should realize that this sort of thing will be explored to the extreme. There will come a day when exotic offerings like this site has will be commonly available for the particular breed that you own.
It might be tempting to laugh, but we'll likely see the day, sooner than we think, where you'll be able to buy some formulation specifically for your semi-retired, middle-aged whippet that has asthma exacerbated by its racing career and is allergic to gluten.