So the talk now is of managed immigration, as all but the wildest Brexiters recognise is needed as the economy will collapse otherwise. Germany has hinted some version of this might be possible. Even Ukip supports it.
So why bother with Brexit and risk the huge economic and trade disruption it will bring? Stay in the single market and customs union, especially as the European economy starts to rev up and Britain's stagnates.
As to taking back sovereignty, this government has shown what a pig's ear they have made of what they control now. The UK in any case is not in the euro, not in Schengen. The take back control line is a joke. It's about time the nation realised it has been mugged by the Tory party over Brexit.