Re: Why would we vote to leave for this reason?
Don't worry, that's not the reason you're being called to vote for.
The reason you're being called to vote for is that some influential group thinks they will benefit and they have the clout to get it done. Whatever "reasons" are being pushed forward are just pennants in the wind for the clueless to be distracted by while the powerful manoeuver to pocket a few more billion here and there.
Whatever the result of the vote is, the same issue will crop up again under a different name in a few years to reverse the result of this vote for exactly the same reasons : some group expects to profit from it. It may even be the same group as today.