>a lot of which they built up more than half a century ago on much cheaper wagesWrong, auto-sector wages back then were much higher in regards to local purchasing power (especially on the housing front) and also unions were much stronger. Now they're already lower class jobs. A VW factory worker could buy a house and take his family on vacation with a stay at home wife. Good luck with that today when you see how much housing prices have outpaced wage growth since then.
>If wages were significantly lower because of more labor migration, the industry would (obviously) be more globally competitive as well
You forget EU car makers have factories outside the EU, in places with much cheaper labor and less regulations. As do Japan's car makers.
>If wages were significantly lower because of more labor migration, the industry would (obviously) be more globally competitive as well
Well, if we just never freed the slaves, we would still have a globally competitive cotton industry.
> just that it's a given
Are ASML and Airbus selling well because they're cheap to make or because of their unique innovations competitors can't easily replicate?
The west's industry marches on high end innovative exports, not competing in the cheap nicknack market. If your western cars aren't cutting edge and innovative you failed. And they aren't cutting edge and innovative because you didn't invest enough in R&D at the right time, because you valued short term shareholder returns, basically the plague of most western corporation.