So I think it's absolutely possible you could have done your boss' job better. :-)
You might also find the white is partly a byproduct that needs to be made no matter what.
And this brings me to what also is truly good at, they own the full chain and leverage it.
There are certain products I notice that only come in stock some years and it seems like they're made out of excess produce.
I.e. a cereal I like is made entirely out of these chunky things that usually go in as additives to other cereals. It looks like they only stock it when they have a cheap wheat price.
Another one is the nut bars and what kind of fruits they have mixed in.
White is literally the color of the cheese. The "yellow" has food coloring and "flavor" added.
The yolks are a by product no matter what.
There was an interview on the Daily show or last week tonight where they made fun of a guy eating a plate of fried eggs that looked like 5 yolks and 2 egg whites. My guess, the dinner sells a lot of eggwhite omelettes and makes use of the extra yolks as another option for other people to buy.
In the supermarket scenario, the supplier only has one customer and has to somehow make them buy both no matter what.
Both are terrible. If there is one thing I really missed on the other side of the Atlantic it was the European quality and variety of cheese.
I still deeply want to know this mystery. It's obvious to anyone who works at a grocery store that certain items are way more popular than others, but grocery stores buy way more variety than makes sense. Maybe it's for appearance in some cases, but no one can see how much American cheese we have stocked at the deli counter, and it's true for the stuff stored in the back of the warehouse, too.