There are indeed far more opportunities for the top 10% income level in the UK. That is what happens whens you lower tax rates for the wealthy, lower IHT, cut the welfare state and the NHS.
Those in the UK on low income, the disabled, the carers are having a much worse time.
The inequality gap in the UK is worse than in France and Germany, but the rich are doing well, so that's fine ?
Also, companies love to come to a place that is part of the EU, but has opted out of some legislation to protect workers's rights, e.g. the maximum weekly hours that can be worked.
Many workers signing the "opt out" are forced to do so, or give up on career advancement, even lose their jobs.
We work longer hours than any of our EU partners, with consequent effect on quality of life, health, stress and family time.
Leaving the EU will allow the governement to really take a machete to what workers rights remain.
That's one reason why most on the left and centre want to remain.
btw, some on the really far left think that leaving the EU gives the best chance of economic collapse and then the voters turning to them in desperation.
The EU requires companies to hold to certain environmental standards, so naturally rightwing Tories want to dump these, go for maximum profit, regardless of the pollution.
The EU protects against extreme laws, tax policy that the left or the right might want to bring in.
The rich can move abroad if a far-left government hammers them with taxes. Those on lower incomes, or dependent on the welfare state, have far fewer options.
For those who think this government or "the elite" have been been cruel and harmful to many people, imagine what they would be like unfettered by EU law.