It is trickled down money.
Liquid cash looking for a home is overwhelmingly white/blue collar retirement money. Billionaire money is almost always a totally undiversified portfolio of their own company. There are billions of people globally who save money and want it to grow, so they hand it over weekly to institutions that do asset management. It's these institutions that are seeking new investments, but the money isn't their own, it's largely everyday people's savings.
