It's strange to me that you are the only one here aware that USA is the #1 as in power to buy, I thought it was common knowledge. I've seen Asian manufacturers say Europe is small-fry for them in sales compared to the USA sales numbers. As for GPUs, many manufacturers don't even sell in Europe at all and you can only find them on the used market stolen from God knows where. Apple phones are common for rich-people, like having a Samsung TV is common or having a TV in your house is common. For other brands without such monopoly, I think if people would see the sales numbers of Europe compared to USA - they'd think the underwhelming sales numbers are from South-Africa not Europe.
I especially enjoyed the delusional comparison of tiny(no joke) countries such as Norway, Luxembourg, Switzerland to USA / North-America. These healthy wealthy European countries toghether don't count as much as 1 state of the USA and in no way represent the entirety of Europe, two of them not even in the EU. I'm European and deal with freight; Europe without GB, France and Germany would just be WTFistan and as underdeveloped as East-Europe.
Italy alone is in the top of world economies on several metrics. Germany and France were mentioned by yourself. Netherlands is the country with the highest internet connection density in the world. There are many more examples. Yes, these countries are smaller, none is 'doing all of the things', but many excel in a specific area or areas and in that, they're leading or sub top globally. Europe is positioned well, globally, and geographically, in distribution chains too. We're on a popular continent with, overall, very high standards of living and this attracts lots of higher segments of business/population. The further you move towards the east, that lead diminishes, which is logical as those member states are still reforming to union standards.
The US also has a strong divide between those with buying power and those without, much like the countries within Europe. Globally, Europe is the third world economy. The reality though is that Europe isn't a single entity, even as EU, the member states are still individual member states. Anyone in sales will tell you its a complete mistake to take the EU market as a single thing for granted.
The individual member states on their own though, are indeed small markets, and that has its effect, much like described. We can look abroad, no problem, but that's looking at other small markets with similar limitations. But overall 'power to buy' isn't the issue here. Europeans spend record amounts on luxury goods and holidays
Availability of goods was also generally never an issue - that's a novel thing. The main issue, is that we've outsourced a lot of things and have been naive in keeping things under native control instead of selling that off to Americans or Asians
That's changing though... hopefully.