That's the same fallacy as claiming that rich people save money by donating to charity.

Simple example:

- Germany gives 100 € to other EU states

- Those states 100 € to buy made in Germany goods

- German companies have 10 € profits from those sales

- German state collects 5 € from those profits

In summary, German taxpayers paid 100 € so the state can collect 5 € taxes, and companies another 5 €. Not a very good deal.

And this calculation is crazy optimistic, because it assumes that all money that Germany gives to other countries will be used to purchase German good. In reality, they will be spent willy-nilly and German companies may not see even 1 € in return.

This calculation is flawed. German state collects much more than 5€, because there is VAT etc and, of course, employees of that company pay income tax from their share of that 100€ they just got back.

It seems that in your worldview value and wealth does not increase, just changes hands.