The basic problem with the EU is that it is  "all or nothing".  Despite glaring problems,  they can not change, update, alter  or amend anything. Even when Islamic terrorism  causes unimaginable  bloodshed, they can do nothing about it.  The EU was become the poison of its own destruction.  The same happened with the USSR: they rigidly  refused to evolve communism  and collapsed under the weight of their  own failures.  They will stand by and watch the entire EU experiment collapse rather than do the smaller things necessary to save it.