Investing in a private company that's about to go IPO is actually not that risky when compared to multitude of other investment instruments that are available.
The secondary market is private market for the 1%. That's literally what it is. Maybe that's not how it started or how it was originally sold, but that's what it is. And it's now institutionalized and part of the law.
The idea that it's about protection is just absurd. It's absurd. Are you telling me you are glad that the 1% is out there making sure that you can't invest in Facebook for $20/share? Protection? Really?