Now we have to make it work because there’s no going back.
But there's the big problem, Peasblossom. It isn't going to work in its present form because it is impossible for it to work.
There is no practicable solution to NI. There never was and after 5 years of trying to find one, and the dreadful 'solution' we have now, it is clear that there isn't going to be one.
Exports to the EU have dropped like a stone or become non-existent in some cases and this is a result of our being a third country and being treated as such by the EU. This is not going to change either. However many other trading blocs we join across the rest of the world and however many trade agreements we might make we are never going to replace the loss of exports/ export value to the EU. Replacing 40% of our exports is too big an ask, ever.
The only mitigation we can have for this is closer alignment with the EU, even, at some point, rejoining the SM & the CU, because it is only by aligning that export restrictions become eased.
We may not rejoin the EU soon, but I wouldn't count it out. With a more trustworthy and rational government it could be a realistic prospect.
Interestingly, something I read recently said that we were now, economically, in much the same position as we were in the 60s when we were desperately trying to join the Common Market...