In the words of one experienced senior diplomat, the longer-term reality is that the immediate emotional response by the EU - for the UK to get out as quickly as possible - will soon be replaced by self-interest. "The UK and EU will do a deal. It won't be perfect, but nor will they cut off each other's noses to spite their faces."
Stan Gregec, chief executive of the Tauranga Chamber of Commerce, was holidaying in Europe when Brexit was announced. Mr Gregec, a former trade official, said the reaction was shock, coupled with a feeling Europe would continue on its path of integration.
"But the EU will need to modify its current course to take the wider population with it," he said. "There are many pockets of dissatisfaction, which will need to be addressed more responsively from the pro-Europe elites to contain the prospect of others following Britain's lead."
It is already clear there will be no rush to the exit by the UK. Prime Minister David Cameron, by resigning immediately, has handed the ticking bomb to Boris Johnson, who is in no rush to trigger Article 50.
And, as many have noted, the referendum is technically non-binding. Noted constitutional lawyer Geoffrey Robertson, QC has pointed out that the UK parliament must vote to repeal the 1972 European Communities Act and pass a new act before the country can leave the EU.
"There's no force whatsoever in the referendum result. It's entirely for MPs to decide."