If he pulled his funding like he did with OpenAI, they would have found funding somewhere else (like OpenAI)
The only thing he does is invest in all manners of companies, and once one of them becomes successful, he pretends like he is a founder and sues the actual founders if they disagree. Or he pulls funding because they don't want him to be the CEO.
Guy is an egomaniac that only invests to make it seem he is a cool guy on the internet.