Unfortunately where capital exists, people will amass capital. That’s pretty much how capitalism works. Different social strata mean that some people will also have an advantage in how they start and are able to amplify their amassing.
making it “illegal” doesn’t really work- you can’t ban people from having money. You also operate deeply inside the law of unintended consequences when you try and pass laws against certain activities.
The idea that our society functions as it does because of our government is misleading- the deepest operators on our culture are cultural. You will be better off with a culture that encourages the wealthy to give generously than you will in a society where people are greedy (as they always are) and tries to punitively tax or take from those who are greedy what they have.
The problem is fundamentally not that people are wealthy- the problem is that people are greedy, and you can’t pass laws against that because it looks different for almost everyone. A society where people fear their own moral short comings and are routinely encouraged to be generous for the expiation of those failings will result in something much fairer than a legal framework for punishing greed.
I have no problem with people having billions of dollars or pounds, if they’re doing something good with it. I might choose to do differently, but it’s not my money. You could tax, but once you start taxing people, you encourage them to run their businesses and enterprises differently. No billionaire is on PAYE paying 45%+NI on everything over 125k upto the 400mil/year they’re making. Most of their wealth isn’t even liquid - it’s tied up in property, or shares and options.
its a real pickle of a problem, but I don’t think wealth, even extreme levels of it, is necessarily the problem. The problem is that for one reason or another they don’t feel like their wealth obliges them to extreme acts of generosity and so those who don’t have much see no benefit.