"Even those who have inherited money, their parents will have worked their backsides off."
How far back are you happy to go on this? There are aristocratic families in this country whose wealth accrued through land gifted to them a thousand years ago, when William the Conqueror arrived!
50 families in the UK own 50% of the wealth. That's not been earned by someone losing sleep over paying their employees, that's earned because money makes money, and because they have more than they could ever spend and therefore more than they need.
IMO, that wealth should be taxed, in the same way as it would be for a working person earning a salary. Why is work taxed but wealth, even at this obscene level, somehow ringfenced?
Similarly, I disagree that it is inevitably the case that the parents will have worked their backsides off. Aside from the huge levels of independent, hereditary wealth in this country touched on above, there are plenty of children who stand to inherit vast property portfolios bought by parents in the 90s/00s, whose only real 'hard work' was benefitting from rapid increases in property values and rental income. They bought at the right time and now their children will never need to worry about money, whilst other children will never afford a home of their own, however hard they work. I know someone who stands to inherit about 30 properties, and in the meantime is living off rental income from some of those properties that she didn't buy. As I understand it, she receives that income as dividends, so pays far less tax than she would as a salaried worker.
I think the tax system needs to be fixed to address these issues, so that people feel that working hard pays. That means a tax on assets or income deriving from assets in the same proportion as would be paid by a salaried worker. Otherwise the productivity crisis will intensify, as people simply disengage from a system they feel is rigged against them and in favour of the asset owners.