@Strandjunker The richest people have got disproportionately richer since 2012, but not as much as that suggests. In 2012 the richest people were Carlos Slim ($69B), Bill Gates ($61B), and Warren Buffett ($44B). So the richest people today are about 3x richer than the richest people in 2012. (Maybe a bit less, because of inflation.)
Also, if you took 100% of the wealth of Musk, Bezos and Zuckerberg and distributed it evenly among the ~300M people in the USA, they'd each get about $600B/300M = $2k. That would probably do them a lot more good than all that money does Musk, Bezos and Zuckerberg, and there are a lot of people whose lives would be radically improved by a one-off $2k windfall, but it's not the kind of money that solves everyone's problems.
That's not to say that taxing the rich isn't a good idea. Taxing them in ways they find harder to avoid would be good too, if we could figure out how and muster the political will despite the inevitable lobbying and corruption. But the real goal should be more "make the poor richer" than "make the rich poorer" and while the super-duper-rich have way more money than anyone could possibly need, taking their money isn't _enough_ to solve the real problems.
It's more than three words, but what's needed is more investment in benefits, in infrastructure, in education, in universal healthcare, and the like. These things will pay for themselves by making everyone better off. Sure, tax the rich too, but that's not the _solution_.