How to 'invest in' private companies like OpenAI and SpaceX

Private companies like Open AI and SpaceX have captured enormous investor enthusiasm in recent years, pushing their valuations sharply higher. Yet, despite all the headlines, there's been one limiting factor when it comes to investing in these companies. Because they're privately held, they've remained largely inaccessible to ordinary investors.>> I think one of the biggest problems we have today is we're building this artificial intelligence. Most of the companies on the bleeding edge are private. And I th ...