As a European dev I want apple to fail super hard and implode. They used to be so cool and make slick hardware for their nische but now I'm happy to use worse hardware as long as they disapear from the face of the earth.
As an American dev I can't wait to see tech companies leave the EU and leave it in shambles as the EU realizes it never learnt how to innovate, only legislate and rent-seek from our companies. Frankly, the region needs us far more than we need it.
If that were what companies genuinely felt they'd already have left, but pecunia non olet, even if you have to pay taxes on it
Moreover essentially the only relevant systemic differences between the US and Europe in the tech sector are:
- pre-existing capital
- a better financial system and regulations (of the financial system) in the US (or rather, a combination of quality and size)
- better bankruptcy laws
Even if one of the big companies left the market that'd just leave space for a (at first) slightly worse product/products to fill the niche. Not exactly "shambles"