I think the main danger would be a (new?) competitor trying to become Apple, to fill the niche of premium devices, simple lineup, i.e. whatever image apple curr

I think the main danger would be a (new?) competitor trying to become Apple, to fill the niche of premium devices, simple lineup, i.e. whatever image apple currently has. And they could do so in europe in all peace and once they are ready expand to other markets and compete with Apple. To me that seems like one of the biggest dangers of withdrawing from the EU.