Because burger meat is commonly sold in the smallest of grocery stores, and is not technically dependent on what buns, sauces, tomatoes, lettuce … or other ingredients you pair them.

And you can grow your own veggies, and bake your own bread.

It is an entirely componentized market. No gatekeepers.

Even single groceries in tiny towns continue having to compete with larger stores in bigger towns. Because they carry small selections most people make the drive to load up their larder regularly.”

You need to find an example that matches the point you are trying to make.

TLDR: Analysis reveals burger markets are nearly perfect economic opposites of centralized app store markets.