I am willing to bet a lot of money that SpaceX will not go bankrupt as long as it keeps up the pace of innovation, and even after that happens, for a very long time.
SpaceX can turn to private investment and there are a lot of people willing to buy what they are selling. And SpaceX is incredibly innovative and a stratetic asset for the US so they will not let it sink. Sometimes, the utility of something is much more than the immediate economic calculation.
I suggest that Musk sending emails containing sentences like this "“We face genuine risk of bankruptcy if we cannot achieve a Starship flight rate of at least once every two weeks next year" tends to worry people. It was a very irrational and illogical email for him to send.
Unfortunately as usual, most people only saw the clickbait about the email and not the subsequent clarification about how he meant that while it was unlikely, it wasn't impossible in the event of a severe enough global economic downturn, pointing to examples of much bigger companies which went bankrupt during downturns: https://www.cnbc.com/2021/11/30/elon-musk-warning-not-first-...
Given his net worth right now, he could very likely carry SpaceX through some economic trouble, but in the event of a big enough downturn, his net worth will probably drop hard due to it being mostly Tesla stock, thus his concern.
Getting results, short term, isn't being an effective leader. Effective leaders do what they say and don't take insane risks that have no way of paying off.
He's been leading SpaceX from success to success for 20 years now, or a quarter of the average American lifespan, a bit absurd to suggest that's "short term".
Don't forget everything in SpaceX is built around the Mars mission. They could reorganize the business and "simply" be a profitable orbital launch provider if they wanted to.
SpaceX can turn to private investment and there are a lot of people willing to buy what they are selling. And SpaceX is incredibly innovative and a stratetic asset for the US so they will not let it sink. Sometimes, the utility of something is much more than the immediate economic calculation.