I want to point out that first of all, this isnt even a good comparison, because nobody is talking about just giving people a massive lump sum of cash. Its about putting the money back into the workers creating it, as well as public welfare systems to ensure future safety nets.
And second of all, even if we just gave the money away and people "pissed it away", the money is still being circulated and put back into the economy.
Of course it is easy to say 'put money back into workers creating it'. But the labor market is just that - a market, and no-one is being forced to give away their labor for free or less than it's worth.
If the tax code is riddled with tens of thousands of exceptions that incentivise a gazillion different behaviours, again, that's the will of the people asserting itself via the tax code. It's much harder to unpick those, right? Thus the highly enlightened conversation about making billionaries illegal and such.
> And second of all, even if we just gave the money away and people "pissed it away", the money is still being circulated and put back into the economy.
Yeah, that worked out great and totally did not result in historically high inflation that will now cause a recession with massive job losses (thus hurting the cause of the workers it purports to support). Also, the inflation is totally not a tax that will be paid mostly by poor people or those on fixed incomes.
This is GP's point, AFAICT.
They're not hoarding grain or iron or silicon or network bandwidth - in fact the only reason they got rich in the first place is because they allocated these physical resources effectively to serve a wide group of people. (See AWS for example. The average computer runs at maybe 10% utilisation for 2 hours a day; whereas theirs are at a high utilisation 24/7.)
As you rightly said, the things that Bezos, Musk and Gates are "hoarding" is capital in the literal sense.
Their net worth isn't made of gold coins sitting in a swimming pool doing nothing, but car factories, server farms and massive logistics networks.