I am talking about short term effects, and not claiming this is a very sane argument. But you should understand that Apple was given a competitive edge against

I am talking about short term effects, and not claiming this is a very sane argument. But you should understand that Apple was given a competitive edge against other companies that did pay their EU taxes. If Apple decided to leave the EU market tomorrow, it would in short term result in economical gain for the EU members since people would by buy the same amount of phones/tablets/laptops but now from companies that (hopefully) pay their corporate taxes.