To press this point, there two groups who benefit from EU policy overwhelmingly, both of them smaller sections of society. Firstly the very rich people, who benefit a great deal from all of it. Secondly, the upper middle-class (the 3-day week highly-paid 'consultant' types). Both who benefit from the tax-dodging, cheap workers - usually from Eastern Europe, despite so-called 'equal employment rights'. Very often from Africa like the Italian luxury leather goods market which advertises 'Made In Italy', but doesn't say that it's on an industrial estate full of migrant workers being exploited. The latter was a recent scoop in Courrier international.
The problem among the Remain camp was that it was full of voices of those who had benefited from globalisation and the EU. Those who skipped off to Europe for a bit living the life and working in professional jobs (people like me!). These people belong to a strata of society that doesn't quite feel the pain. So they're full of joy about how marvellous their jaunts are. They don't live in slums or work in the bad jobs with poorer conditions.These people don't know the other side. The difference between living in reality and being an ex-pat dining with international friends in good restaurants.
Ever been to e.g. Porto in Portugal and seen how some people live? It's not well-advertised in the likes of Wikipedia or travel brochures. There are a lot of people in Europe who do not live well and are exploited and bullied by employers, privatisation (especially housing), low pay, bad politicians in hock with big business.