Sure, the EU could turn into Cuba or North Korea and avoid financialization... but most people will not accept that sort of stagnation in their material conditions. They want a new iPhone, new clothes, new washer, new car, new coffeemaker, holiday in Spain, etc. All that costs money, and ever more money.
You also did not address the elephant in the room at all -- most of the costs of keeping the EU from turning into "Russia's westernmost oblast" fall on the taxpayers of the United States via NATO. Avoiding that outcome without what is essentially a large and ongoing annual donation from the financialized United States is not possible, at least without undergoing a similar degree of financialization in the EU.
It seems like you wish to enjoy the economic benefits of financialization (new iPhones, not living like Cuba, and also not being conquered by Russia next week) while at the same time morally disparaging those who make those benefits possible.