Many of us have amusingly predicted the demise of the EU. Much of its decline being the result of Brussels shooting its own foot. The big-wigs have become too controlling, too eager to create a 'United States of Europe', and too led by a power-hungry Germany. People simply won't have it.
At present there seem to be six serious candidates to quit. Italy, Holland, Denmark, Croatia, Finland, and Sweden. Even the Citoyens de France are having their doubts. More so than with the other six, if France was to quit, that would definitely be the end. The European big-wigs cannot be happy.
Of course, how serious these countries are about quitting remains to be seen. I believe all six have been encouraged by Boris's 'deal', and each will follow the UK's progress for a while before holding their own referenda. The EU could look very different by the end of the decade.
It is also amusing to note that, now that the UK is out of Brussels' clutches definitively, English will remain the Official Language of the EU. Maybe this is why Macron is spitting feathers.
Interesting times ahead.