Chilco's example is bad and I agree that there are limitations that weren't there before however for most people the choice of studying, living working abroad is not as easy as many are trying to paint this picture as. It really is limited to those who have money (themselves or parents/family.) But it is not impossible.
I just can't see places like Spain going along with any plan that stops free money (UK pensions) coming into their country.
There are currently no limitations on any adventurous young Briton who fancies trying their luck in Germany or France; you can just get up and go, and look for a job when you get to Berlin or Marseille. You don’t need money for that.