Companies can and will huff and puff but 60 odd million customers can't be ignored, if a company pulls out, another will take its place. If BMW's get even more expensive then we'll drive Fords or Hondas. Life will settle down and we'll roll along. It might take a year or two with issues like price hikes and/or shortages of some stuff but we're still a prosperous country. Its in politicians interests to keep us plebs sweet so whether its with the EU or other countries we'll get ourselves sorted, these things do take time though. Something to bore the grandkids with maybe.
So there's an element of poker face negotiations wise, a bad deal or no deal would be bad all around and yes cutting off our noses to spite our faces certainly in the short term, but that's kind of the point, we want out because we felt to some degree that we were being screwed, a remainer friend of mine said our trouble is we stick to the laws they make, whereas others if they don't like them, they don't France in particular has no problem folding it's arms in defiance or Germany for that matter, It all went south trying to go too far Europe is made up of individual countries, how is it that on the one hand we want to devolve power, and on the other centralize it? I really am sitting on the fence now in a sympathy for the devil type way, it's a high stakes poker game situation here it's never going to look good until a deal is struck, I can see many here are thinking piss up and brewery but I say it's clear as mud, fill the cupboards and turn off the bloody news 
