For a very long time, enthusiasts have been frowning about all the car models sold elsewhere that aren't sold here. Ford and GM were particularly egregious in this regard, not sharing a single model between their European, American, and Australian divisions for much of the time even in similar divisions. Let's look at Ford's 1986 lineup to give us an example.
There were 3 different cars in European Large/American Midsized lineup
Americans got the very excellent Front Wheel Drive Taurus
Europeans got the rear wheel drive Scorpio (which incidentally was sold briefly in the US under the Merkur nameplate, Merkur being German for Mercury)
Finally, for Australia, they got yet another car, the Falcon
Now for what Europeans call midsized and Americans called compact
Americans got the Tempo, a car that defined blandness.
Europeans got the controversially styled Sierra.
Australians got the Telstar, which I think provides a good balance between the two extremes above
Now for the European Compact/ American subcompact
Americans got the Escort, which sold well but was a crude and miserable econobox
Europeans also got an Escort, but despite sharing a name, it had nothing in common with its transatlantic counterpart.
Australians got the Laser, essentially a rebadged Mazda Familia.
That is the 3 most important segments of the car market and Ford didn't bother to share one model in any of them. It was the same at GM. More recently, "world cars" have come into vogue, the stupidity of selling different models in different markets going away and instead reaping the economies of scale from sharing. The question is why didn't this take off earlier? It seems like utter stupidity to have not done it.