What a bunch of nonsense. A billionaire investing millions has virtually no chance of helping you. The only conceivable way he can help you is by participating in an IPO so that particular company gets an injection of cash to use to hire more people, etc. But virtually all trading that will go on with his/her millions/billions is buying and selling of stock that IPO'ed long ago and no longer bring the issuer any money at all.
The kind of investment the billionaire is doing is zero-sum in nature and doesn't help anyone but them.
It's hilarious that you imagine some billionaire playing the stock market has more value to you than people spending money on products (that you could be making). The 80's called and asked for their misconceptions back.