If companies go, then so does its personnel. Some get to migrate along, the simpletons can be found locally. That's how it is and always has been, think of the great deinstrualisation of the continent to either cheaper areas or even all the way to East-Asia. These were situations that could've been avoided with subsidies (EU/National style), but we didn't. You focus on the business aspect of things of multinationals and that's a fine perspective to have and a pretty valid point, but it's also the only point. The UK paid annually around 14 billion euros to be part of the EU. I'm not even sure if the doom scenario you sketch would amount this sum. We can't know yet, we'll see. I'm sure companies would be open to offers/deals if that means they wouldn't have to relocate, the national legislation as well as standing trade deals are still there, after all. I feel like you underestimate the UK when it comes to their (in)ability to keep the business where it is now. But that's just my point of view. And for me it's pretty easily said indeed, also because of the ginormous contribution per person to be a EU-member, that I know the tax wouldn't be thát much higher in comparison. And truly, I think about this alot, discussed this alot, read alot, etc. but it's time to be responsible for ourselves again instead of being dictated by a central government that hasn't been chosen democratically. What was wrong with the pre-Maastricht Treaty Europe? I think that was the best of both worlds: it maintained the identity of each country whilst having efficient and functional trade pacts.