Who owns what gets complicated.

Consider Cars....

One might be tempted to say that all German cars are Volkswagens... and all Italian cars are Fiats. Which is at least partially true as I think VW and Porsche have merged, and Fiat has swallowed Ferrari, Maserati, and Alfa Romeo (Oh, Lamborghini is apparently VW).

In the bike world, of course, not all Italian bikes are Colnagos. One has Bianchi, Atala, Cinelli, De Rosa, Pinarello, and several others.

No doubt China, one of the biggest countries in the world has multiple different manufactures. Perhaps sharing things like carbon manufactures, but diverging in production. There may be benefits of common manufacturing techniques in the country.

In the tool world, there certainly are differences between big brands like DeWalt, and those second tier companies like Harbor Freight who seem to count more on quantity than quality.