Technology

and fucking invest into not needing to use American-controlled CPUs as every single one of them contains a backdoor.

China has been working intensely for at least 2 decades to catch up, and they are still about a decade behind!

Netherlands has ASML which is a huge advantage for European independent manufacturing, but even with that it's an insanely expensive investment to make a realistic competitor to AMD, Intel, Nvidia, Qualcomm, Broadcom etc. because they have loads of patents that are hard to avoid, and they have decades of know how. This is not even accounting for the software infra structure that would have to be built almost from scratch.
Chip production is a global enterprise, and even USA isn't independent anymore. They depend on ASML and TSMC for their most popular products in AI, Smartphones, servers, laptops and desktops. And more and more Arm is taking over from Intel/AMD.

What we may be able to do would be using Arm and have TSMC help us with manufacturing. But to make such a project succeed is not an easy thing, we had European computer companies in the 70's and 80's that were heavily subsidized by governments that dominated home markets for several European countries, and they essentially all failed against international competition.
So what we risk if we were required to use a European product funded by EU/European governments would be to have to use an overpriced under-performing technology, that would be a millstone around the neck of all of Europe, making Europe not catch up, but instead fall further behind.