I personally think the same as the other comment. Do you really think money is the bottleneck? Let’s assume Sam Altman felt that way. He couldn’t drum up that cash tomorrow if he wanted??? For the pinnacle of human invention. Twitter was purchased for way way more than 50 mil.
Yes? He's invested in GPT-4 which just came out. He needs to retrain a new model with higher context limit as well as build out memory systems probably with vector databases. OpenAI needs to continuously raise money and buy more hardware. I'm not sure what OpenAI is doing but they're obviously resource constrained, else they wouldn't be outpaced by competitors in text2img.
He probably doesn't want to give away more of his company since it's such an obvious winner.