Wall Street wants to let investors in on private markets. Should they take the invitation?

Getty Images; Tyler Le/BI

A lot of people are about to get rich from OpenAI's expected IPO. You probably won't be one of them.

By the time Sam Altman's juggernaut finally trades in public markets, it's expected to already rank among the most valuable companies on the planet. A staggering amount of wealth will have already been created. Most of it will belong to early investors and insiders who participated behind the closed doors of private markets.

Retail investors will eventually get their shot.