When you have a product like Coke you default to your most popular products - your best sellers. That's what you provide. The only reason you provide something different is if you are specifically asked to.

When McDonald's opens a new store they don't start selling exclusively non caffeinated Coke products (even in Utah county) and wait for the customers to demand a change before they react. When a movie theater opens they don't exclusively sell non-caffeinated options citing "no demand" for the regular, most popular options. Did Mercedes Benz stadium this year open up with only non caffeinated products? Of course not.

Even in Utah county, caffeinated Coke and Diet Coke outsells non caffeinated by significant margins.

The "no demand" argument is completely ridiculous.