No, he did try it back in 2017:

“In late 2017, we and Elon decided the next step for the mission was to create a for-profit entity,” OpenAI said. “Elon wanted majority equity, initial board control, and to be CEO. In the middle of these discussions, he withheld funding. Reid Hoffman bridged the gap to cover salaries and operations.”

Elmo is just throwing a tantrum because he wanted to be the one to take them private and roll them into Tesla but the rest of the board said no.

They only have to moderate content from users on their server, and the idea would be that only CBC employees (or programs) would be given accounts which also verifies they are legitimate. Readers subscribe to those accounts from their own instances.