Can you name the #1 selling brand of paper clips?
It’s a simple question. It should be obvious.
For every product in the world, there is a single top selling brand. Some items are easy to name as the top selling brand in their categories: Budweiser (or Bud Light if you need to be a stickler). Coca-Cola (ditto for Diet Coke, again depending on your point of view). Bic pens are ubiqitious, but at least you know who Bic is and that they are a pen manufacturer.
But the paper clip is even more common.
And chances are you still haven’t thought of even one manufacturer of paper clips, let alone a brand name, by the time you’ve read this far.