Re: those of us left will earn more as a result
Unfortunately all the multinationals are already relocating across Eastern Europe as the wages & expenses are cheaper. Romania, Hungary etc are huge savings. Whatever we do we have to deal with this. Even if we remained in the EU this would be a problem.
If they want to stop the tech drain stop or significantly reduce intra company transfer visas. This has been abused for decades and normally results in the work going offshore. They could have done that without Brexit.
The big problem is tax take unless jobs pay more & we get companies to pay more tax we are going to run out of money to pay for sweeties to bribe voters.
People seem to present any limitation of movement as binary, We don't want cheap Eastern European waiters & care workers that must mean we won't allow immigration of world beating scientists. We had a points based immigration system before why wouldn't it work now?
If we respond to reduced freedom of movement by upskilling maybe we will be better off.