The biggest flaw in the "Leave" campaign is that the Britain that many of the "Leave" people seem to want back, had already disappeared long before Britain ever joined the EU.
They're welcome to try autarky but the closest that they've had to that in the past several hundred years was during WWII and, as my dad could attest, life was pretty miserable at that time.
As someone else pointed out, the UK had the best of both worlds - it had easy access to the EU markets but it still had its own currency and wasn't a party to the Schengen Agreement so it still controlled its own borders.
The irony is that if the UK wishes to continue trading with EU countries - and almost 50% of all UK trade is done with EU countries - then it will have to meet EU regulations with regard to exports in any case, regardless as to whether it's actually a member of the EU or not. So it will still have to do the things that it did as a member of the EU, but without the preferential trade advantages that it had as a member of the EU.
It will be interesting to see the effect that this will have on London with regard to its current position as the financial capital of Europe. Still, I guess that it might help to make London property a bit more affordable.