You are talking of a war between to of the richest countries in the world (in terms of their underground), and between some of the richest oligarchs in the world (both sides even have extra Israeli passports in case they need additional off-shore business which is perfectly integrated to the intl markets).
The EU is just offering itself as a champ de bataille for a long war between the US and China. If you think it has any chance to benefit from the war, you are delusional.