Yeah, obviously some people are against a tax union, for example Luxembourg profitted from being a tax haven, and guess what the former PM (and before that Fin Min) of that country is doing now: https://en.m.wikipedia.org/wiki/Jean-Claude_Juncker
Who are the UBOs of these Luxemburg entities? Happy activist investors? Or wealthy family funds who funnel the money to CH and the Caribbean?
A leaking bucket.
The rules around taxation in a global economy where mainly ideas/IP are shuffled around needs to evolve.