The European Union will fail and so will the Euro. Britain's is doomed as you say BUT the real cause is too much regulation and too much taxation . They cannot compete with Asia where there is very little. The US is a big enough market it will do fine.

https://marketinglegend.medium.com/the-west-is-legalizing-itself-out-of-business-8b824834fd01?sk=82f5d41bc051439a94dd1f52e1feafab

https://marketinglegend.medium.com/the-uks-brain-drain-is-underway-and-this-time-it-will-kill-the-country-off-d76c875bb66?sk=a3552ce3d7f504a931e5cec2afd277e7