No – if anything we will have to get our act in order if we want to deal with the rest of the world and still be part of a global economy.
That means that we will have to share information and in a way that provides assurance that we are working to similar standards.
There is an element of shock but unlike some overly sensitive souls that are saying that they now have PTSD because of the vote we just have to get on and deal with the hand that has been dealt.
The critical thing is to consolidate on good practice, understand what may change and then make the changes that you think may be necessary.
It is better to be 90% right now and 10% wrong rather than get to 2018 (or whenever) and find you have no idea of what is going on.