Twitter is it’s own entity. Musk is not in debt, Twitter is. And if their coffers are empty they can take more debt, in Twitter’s name. I’m sure a Saudi bank would oblige as long as it’s useful. However Twitter could go bankrupt and Musk would just lose his initial investment, which was a couple of billions max. Saudis, Russians and the Peter Thiels of the world would lose their investments as well, which I’m sure they would see as a small price to pay to kill a platform so inconvenient for them as Twitter was.

Tesla? Last year all tech stocks took a dive. Tesla’s price is based on unicorns and rainbows, so it tracks the tech bubble more than real companies like Ford. Same like OpenAI and others.