I reckon the EU want this over and done with as quickly as possible, while discouraging any further dissent, so they won't negotiate any further and they certainly won't give any more ground than they already have.
There's huge, and growing, problems with the Italian economy. Continuing problems in the Greek economy. The politics of Poland and Hungary are moving ever to the right -Viktor Orban was actually sanctioned, for defying their edicts !! There's growing anti-EU sentiment in Germany, Austria, Holland, Poland and Hungary while, across the pond, Trump fires broadsides at every availa