@ H in The Hague
One thing you didn't explicitly mention is that a good number of businesses represent foreign investments made in the UK specifically to provide an EU manufacturing facility. These include a number of car plants which are in areas which seem to have supported Leave. We once had a largely native motor industry. Its employees pretty well destroyed that. Foreign investment gave us another. It now looks as if that's also being destroyed by its employees. Does anybody think anyone will give us a third?