There never was a chance of other EU members following the UK out,
once they actually saw Brexit, whether very soft, very hard, or anything between
Everyone, even those few who had intensively researched Brexit, seriously underestimated in how many ways it would damage us.
The softest Brexit would be some form of EEA & SM membership with a customs arrangement
that would be BRINO plus being a rule-taker - even EFTA just accepts about 25% of the EU rules
All the harder options involve some degree of economic damage and all mean rule-taking
Its like Year Zero wrt trade
We lose the 40 FTAs the EU has with 70 countries
We lose the 800 other trade arrangements
We have to renegotiate all trade deals with other countries - and many will demand tougher terms than they did with the EU, because they know we are desperate
Its like Year Zero wrt essential agencies, like EURATOM, EMED etc
We'll have to bild those agencies from scratch, without the EU economies of scale
There is no deal as good economically as the deal we have with the EU
Even JRM talks of 50 years before we see the benefits,
i.e. he's trying to postpone any recriminations until after he's died of old age
(I'm ignoring NI, since no other country has an equivalent problem)
This is why almost all the eurosceptic politicians outside the UK now want reform, NOT to leave the EU
Most no longer even genuinely want to leave the Euro
They have seen the mess the UK, the former #2 economy in the EU, has got itself into because of trying to Brexit
The incompetence & ignorance of most UK politicians has made Brexit laughable,
but the reason the few capable politicians are stuck as well is that Brexit has far too high a price for the economy
As Junker said about something completely different:
"we know what we have to do; we just don't know how to get elected afterwards"