The UK left the EU for just that reason. It's so frustrating to have your 'leaders' not representing you, and then whenever they get called out they just say 'oh well we would've done the right thing, but the nasty EU wouldn't let us do it'. So it's good to take away that excuse at least. Although of course they have infinite other excuses. 

 true, probably more countries now will learn the lesson and exit to, perhaps towards BRICS since now they have options that could compensate and with not much to lose considering the current state of affairs