Re: The elephant in the room
This all presupposes it actually becomes as hard for skilled UK workers to head to the EU post brexit as the UK wants to make it for EU workers coming here.
There's nothing the UK could do to stop the EU offering very low barriers to desirable UK workers, the referendum and it's immigration spin mean the UK could not do the same without going to war with it's voters. Yet another area where the brexiteers have no leverage over the EU and could only threaten their own people to prevent it.
If that happens, there might well be higher wages for the few that remain here. Might not be many companies left though.