I am saying that because I am responding to your false claim that hoarding does not happen, the simplest rebuttal is, yes it does, because billionaires exist...

Of course the reason for this is because we live in an economic system that allows this to happen and since all economic systems on the planet are controlled by governments, we can say that politicians are the ones that allow this to happen, that is just the system we are currently living in.

The reason why or how these billionaires got their capital is irrelevant, they could have stole it, earned it, won it, inherited it, it does not matter...

Once you reach this level of capital accumulation it is pointless to keep accumulating more, it is just hoarding capital.

That is why we government taxation, it serves 2 purposes, to prevent this type of wealth inequality (hoarding) and to prevent high inflation, but it only works when you have competent politicians who are not corrupted and understand how the economic system works.