I would suggest that only a minority of the country have particularly strong views on Europe either way. The turnout at the referendum was impressive, but 72% still means over a quarter of those registered to vote didn't bother. And of the 72% that have enough of a view to vote, there is no evidence that a majority of them care enough to continue fighting for their preferred outcome after the result. I would suggest the majority have gone back to not seeing their lives defined by membership or not of the EU just as they had before (and in my mind this is only further evidence of why a referendum wasn't necessary in the first place).It's been pointed out quite a bit in the last few days (why it's taken so long is a mystery to me) that while leave may have had the biggest vote in history, due to the fragmentation of that vote, between no-deal f*** the EU and socialist wonderland bring on the red tape, remain actually holds the biggest democratic mandate in UK history. If anyone can see a way forward where more than 48% of the country are happy, I'm all ears.
Yes remain does have more people willing to take to the streets for it than leave does, but you can't overturn democratically reached decisions based on how many hardliners can be brought out after the fact. Right now the biggest remain movement isn't the 1 million people going on a march for a 2nd referendum, it's the 3 million people who believe the 2nd referendum should be dispensed with and Article 50 should just be revoked outright. Should we now do that?
And on the '48% of the country are happy', I'm not sure they are. Just as leave is fragmented, so is remain. I voted remain not because I'm pro-EU but because I didn't believe the EU was quite the problem that it is dressed up to be by Farage and his followers, and I didn't feel there was enough information available on what would happen next to contemplate voting to leave. I am also ardently against trying to overturn the result, as I feel that whatever arguments you want to level at it (many of which I sympathise with) we did nevertheless vote to leave under the system that was put in place and overturning this would be entirely undemocratic and wrong. This doesn't put me in the bracket of the sort of remainer that's going on demonstrations or signing petitions at all, despite us voting the same way.
This idea that there are multiple visions of brexit but only one of remain is in my view nothing more than an attempt to split the leave vote - few PV'ers seem to support the idea of a straight rerun, instead they want 'remain', 'leave A', 'leave B' etc - so they can claim a victory with less than half the vote. Personally I would rather remain in an EU demonstrating itself to be capable of reform and which is willing to draw a line on the level of expansion and integration it seeks, but that remain wouldn't be on the table.