Outside of even preferential shares, there are other reasons not to invest. The company isn't public, so the reporting requirements are minimal at best. There

Outside of even preferential shares, there are other reasons not to invest. The company isn't public, so the reporting requirements are minimal at best. There isn't anywhere near the oversight of a public company, so shady business shenanigans are very difficult to detect. And, of course, the kicker is that there isn't really a market for the shares, should you want to liquidate your holdings. It's an illiquid asset with minimal protections and no timeline for being able to sell it and no influence over the direction of the company; is that really something you'd want to invest your money in?