This is a guaranteed break-up.
But I will state this. Germans have woke up in the last five years to realize their government runs the same tax and distribute game as Belgium. Hessen and Bavaria are among the richest states in Germany...which watch a good bit of their income float over to five or six really marginal states. They’ve hinted that this distribution game needs to come to an end, and the money stay in the state that it’s earned.
I suspect that if you go through Italy, Austria and Spain...you might find the same separatist movements alive and flourishing. The EU might wake up in ten years to find six smaller countries flopping out of the old counties.
As time goes on & multiculturalism dilutes nationality, EU countries will disintegrate into enclaves of culturally similar people. National governments will weaken as the EU takes preeminence. In 100 years, there will be no Germany, France, or Holland - only city-states within the greater EU & chaos scripted in Brussels.
If things don’t change drastically here you will see the same thing happening.