I see your point, but as a counterexample, look at the TV industry, at PC monitors, at washing machines, etc. There manufacturers have, for decades, created SKUs left and right, sometimes only so that a large dealer can offer to match lowest prices because no other dealer has access to the same SKU.
> it takes a paragraph to figure out how 2 Dell laptops from the same release year differ. The exact same specs will be in two different chassis designs.
I don’t know how they do things nowadays, but it used to be the case that the same SKU didn’t even guarantee you the same hardware. Two machines of the same order could even be slightly different, requiring different drivers.