Very naïve post.
People aren't all the same, don't have the same opportunities, different drives and ambitions.
But more importantly, the wealthy keep taking everyone else's wealth be it in energy, rents, mortgages, food what ever, they keep taking.
All the tax payers money given away in bank support, housing benefit or furlough or energy support? where do you think it went?
Your "oh people just need to work more/pay more tax" You think a farm labourer, cleaner or a care worker etc who works harder/longer will suddenly have enough money to buy a house, afford their rent? buy healthier food?
They'll just lose their UC (which they get even when working FT) and be worse off but now worn out.
The cause? suppression of wages and cuts in support for poorer familes.
We've had decades of your approach and it hasn't worked, nor has it worked anywhere else either, yet you still want more of it.