What you are suggesting is vertical integration. If Europe goes crazy, can do that. From start to finish this chip thingy can become "magic crystals from Europe" as they already have control over the tooling. How many billions it will take to build the fabs with these tools and hire the talent from all over the planet and put all that in special economical zones? I don't know but I bet its less than those who don't have and end up buying the tools.
Europe is already a great place to build your life and despite the narrative about "EU killing businesses with over regulations", Europe is an exporter, that is EU makes physical things in large quantities(that's why USA is able to blackmail EU with tariffs). EU produces and exports so much, more than it consumes. Its closer to China than USA in this regard, you can check out the recent stats here: https://ec.europa.eu/eurostat/web/products-euro-indicators/w...
The infrastructure is in place and there are both many nuclear reactors that were decommissioned early or not yet commissioned but canceled/put on hold as well as regions with plenty of sunshine or hydro power opportunities and also has all the expertise to re-work those quickly.
It's really a political decision to push for something like that or not. Geopolitics may eventually make it happen, who knows? At this time it makes more economical sense to make the tools and send them close to the larger supply chain of electronic products production.
> Europe is already a great place to build your life
Agreed. Its countries' long-standing equivalents of America First policies mean that they spend far more on their own citizens, import far fewer people, and leave most of the charitable, defence, and research spending to the US taxpayer. Good for them.