Erm, ... OpenAI has hyped when it started and it took 6 years to take off. It's way to early to declare the SSI and Thinking Machines have failed.

They took money and haven't released anything. How are they doing?

To be fair to SSI, they were very explicit about their plan: "we are going to take money and not release anything until we one-shot superintelligence."

If you invested in that you knew what you were getting yourself into!