Re: Too Late.
The Euro is a disaster for most of the EU, by definition (as pointed out by any number of markets observers at the outset). Essentially eliminates the only timely government influence on the local economy (I'm speaking here in a nation sense). ie, Monetary Policy out the window. A great bonus for those economies on the upside of the register (really only Germany), seriously damaging for those on the downside (eg, Ireland, Italy).
Interestingly, the Euro agreement was when the EU bureaucrats were first really feeling their oats, and drafted it in such a way that there is NO exit provision, same as how they insisted the Theresa May brexit "deal" be drafted (it was already bathetic even without that, mind you).
If you've ever wondered WHY ON EARTH the ECB etc has fought/subsidised so desperately to "save" Greece, this is why. The (actually necessary for recovery) Grexit would necessarily exit hte Euro, at which point the actual illegality of actual physical/real-world reality/necessity would start to force into public awareness even for The Believers/Trusters that what they'd been told was going on, actually wasn't, that quite another agenda by a surprisingly large group of parasites was under the table, rather than what was on the table.