Why build a fab in Europe if the demand is in the US?

Instead of paying some company for a fab that will manufacture chips for US companies, Europe should build a chip ecosystem of its own. As we all know, there’s a shortage of chips in the world. Building additional production capacity will take several years due to the long chain of industrial players involved. The fab needs a clean building, inside we need wafer steppers and other machines. Moreover, these machines must be built from parts that are in short supply. In addition, the world needs to keep innovating toward more advanced CMOS nodes and develop even more advanced machines. All this is a complex process that’s hard to accelerate.