There are two stories here, both of which have some truth.
The first is that some do choose a ‘feckless’ life for want of a better word. It is possible to be better off on benefits than working, which it shouldn’t be. A large part of this is due to the binary nature of our tax system where benefits suddenly disappear at certain income levels.
The other half of the story, though, is globalisation, QE and low skill immigration. All of the above have benefited the wealthy by reducing their costs for goods and services, while making some jobs not remotely cost effective for people who live here.
Economists will insist that globalisation is a positive in that it increases total wealth. That is true but they will admit that it increases global average pay while decreasing it within nations for low skilled jobs. If you were a Consett steal worker, the fact that an agrarian worker in China now produces steal for twice the wage he used to get won’t give you much comfort.
And we do need to consider why certain jobs are paid so much and where that money comes from. Where is the money coming from to pay magic circle newly qualified solicitors £150k base? Are they really doing super important work or so brilliant?! Personally I doubt it. There are a lot of pro finance government policies (pension investment rules, fees to manage pensions, allowance of mergers which are value destructive to investors etc etc). These are effectively taxes on the middle which are redistributed to the wealthy. We may not call them taxes, but they are.
The resentment of benefit scroungers is obvious. But how much, in money, is it actually costing us. If we could stop all benefit fiddling, how much would it save in taxes. I am betting something, but not life changing.
OTOH, what I think people resent at the top end isn’t people genuinely being rewarded for hard work and skill. I don’t hear many complaints about neurosurgeons or brilliant engineers earning a few hundred k a year. Or even top sportspeople, who clearly have skills which entertain us. What I do think that people rightly resent is sectors based on asset wealth and contacts (finance, lawyers servicing finance sector, top end estate agents, executives hugely rewarded for failure) etc. It isn’t capitalism , it is crony capitalism, where it is very hard to fail no matter how bad you are once you are in the club.
I guess an interesting test is whether you feel more unhappy about the benefit scrounger scamming £50k per annum, or the Merrill Lynch bonus takers of 2008, who lifted billions from a bankrupt company and paid it to themselves, or the compensation of water company executives who freely pollute and mismanage their companies.