What would be available for phones and laptops in this scenario? The FairPhone, System 76 laptop... what are the other options? (Assuming you also mean Microsoft)
I'm sure they could pass laws to make these things possible.
Assuming that these ideals are correct, I'd think that new device makers would pop up to satisfy these markets. I think something similar has happened with Huawei in China. The EU is going hard after FAANG, but if they all pulled out, does the EU have anything that can replace them?
Edit: Actually, Fairphone is a great example. I think it's the sort of thing that satisfies all the ideals that the EU is trying to get to.