You can’t blame UK for wanting more control over immigration and a degree of separation from the Italian, Greek and Spanish economies (if they can be called that). It’s likely to be painfull for a while though.
Britain was always a small player in the EU, never fully engaged either politically or economically. Britain being out could actually be better for Italy etc.
Not if the UK grabs the gauntlet and LEADS. Leadership, be it BREXIT or Trump is beginning to win the day. A lot of terrible crap is going on in the world today, and I believe LEADERS are finally emerging to call it what it is.