Terence Corcoran: Don't be bamboozled, Brexit creates huge opportunities for the U.K.

The immediate market and political shock reactions to the thin-margin Brexit referendum result should not be taken as portents of coming cataclysm. The Leave vote may stagger the British pound, rock some global stock exchanges, topple a prime minister and depose a pro-EU leftist crank from the leadership of the British Labour Party. But none of…