For starters, you need to present facts - we had a single referendum in 1975, it was designed to gauge support for continued membership of the EC, a membership that the UK was brought into without the public's consultation, we'd already been signed into the EC by Ted Heath in 1973, the people didn't have an opportunity to state their opinion on the matter, that was the first constitutional mistake. The second constitutional mistake happened in 1992/3 when John Major joined us into the EU, again without any public consultation, if only a referendum had been held in 1992, then we might not be in such a difficult position now.
If I was of voting age in 1975, I may have voted for continued membership, despite the unconstitutional way the UK had been taken in, I'm pretty sure it looked like a trading arrangement in 1975 with very little hint of the political and legal maelstrom that would ensue 20 years later. However the problems over the sovereignty and legal aspects were clear in 1975 and possibly not communicated enough to the UK public, but not being old enough at the time then it's difficult to say. If we'd had the internet back then, then I suspect we would have extricated ourselves at that point as the public would have voted leave.
When you read the history and timeline of the 1975 referendum debates and the way parliament voted, the arguments, the split in the Tories and Labour and the recommendation of the govt to remain, you can draw many parallels with what has happened in the last 2.5 years, it's almost history repeating itself, apart from the fact that the vote has now gone against the majority remain that exists in parliament. This is where the political class and the citizens are at odds with each other.
So, given all that unconstitutional history surrounding the UK's membership of the EU and the current unconstitutional way Brexit has been handled so far, I'd say we have a clear pattern, except this time it's 3rd time unlucky for remainers. If there is another referendum at this point, that is unconstitutional to begin with, I am opposed to that. If such a referendum manifests in a vote to remain then I will feel doubly aggrieved at the process of leaving the EU. There is simply no excuse for it.
So yes the campaign to leave would continue and I am pretty sure that it will happen in time, there would be millions of people who would feel very similar to myself that will begin to vote for a political class that does listen to those who have voted for them, regime change would be on the cards, as remote as it may seem now, in 1993 leaving the EU was a remote possibility, so anything can happen, this thread will still be rolling in 30 years
Regardless of Brexit, there are many in the silent majority on the continent that are unhappy with the EU, change is coming, speed of change is the real question and how will it effect the member states in the years to come. If France, Germany, Italy and the UK are in full rebellion, then the EU only has the EU military to fall back on