Money needs to move to benefit the economy. In my opinion, one of the big problems with the super-rich is they have more money than they can ever spend (over several lifetimes). This money is just siphoned out of the economy. We're taking natural resources and work and converting it into a number in a computer and that's it.
There is such a glut of money doing nothing that there is hardly any place to even invest it. You even have companies, like Apple, sitting on massive cash piles. A pandemic can't affect the stock market or housing because all this money needs somewhere to be.
The central banks think they can make the money move if they buy everything reputable and force everyone else to consider buying less reputable things. This is somewhat happening but not in great enough numbers, one of the desired examples being SPACs buying startups where VC's and the whole population continue underservicing, the less desired examples being "meme" stocks but it is good when those companies recapitalize with direct issuances, unexpected examples being intangibles and obscure cryptos and I'm not offering an opinion about that, I do know it is not the point of the central banks monetary policy. They want people to be forced to invest in founders without pedigrees. Simple. As we can see, people would rather pay the government to not risk their own money like that, inflation concerns be damned.
The hoarded money will really move if the central banks A) stopped buying and B) sold everything
What Congress can do: keep wage workers on basic during recessionary periods and don't let the Fed buy bonds and mortgaged backed securities
So everything tanks to its natural market price while employers convulse and stop hiring, and more capital efficient organizations replace them, and the unemployment numbers can be ignored because they're fine for now
I’m going to use that line