Comment by redis_mlc

The short answer is this.

Wall Street exists to profit by skimming money off society, like a predator waiting for gazelle to approach a watering hole.

The Chinese government produced an excellent short film on this that was shown on airlines about 5 years ago. At the end was a warning to the USA not to devalue the dollar (to wipe out Chinese holdings.) :)

Silicon Valley VC's also do that, by skimming 2/20 (or more) from institutional investors with no downside risk to the VC.

The long answer - it will take you decades to study and learn. Do some reading and watch NBR.