This is a slightly altered version of a comment I left on a Brexit page on Facebook as prompted by this article about IMF forecasts and related issues at Reuters:
The most ardent Brexit supporters have to take this sort of analysis on board because it is relentless in much of the media, and not without reason. Some of those who backed exit from the EU for freedom reasons wanted the liberalising impact of less red tape, a reduction in the burden of the State, and a more intelligent government approach to areas where the State inevitably gets involved, including R&D spending, infrastructure, education, etc. Nearly all of the drivers of long-term wealth creation are home-grown, and cannot be blamed on the EU, or attributed to it. Long before we even thought of a referendum, the UK’s productivity and investment levels were poor, from 2009 to 2019, by past and contemporary standards. (The referendum was held in 2016 and we only actually left four years later.)
The petulance of the EU in trying to harm the UK for the sin of leaving was probably inevitable and forseeable, and there is a need for whoever is in Westminster and Whitehall to slash the burdens on business and the individual to balance this out, as well as hammer out genuinely good FTAs with countries that broadly share our values and market systems. A mutual recognition of standards approach to the EU, when it comes to EU-destined exports to the bloc, should be possible in time although it may take a while for the EU to avoid the “cutting off the nose to spite the face” stance of the past few years. The UK remains an important trade partner, given our net importation of manufactured goods from the continent.