Plunging U.S. revenue at X risks opening up a "massive hole" on its balance sheet that Musk needs to plug to stave off its financial collapse.
Musk’s repeated outbursts against advertisers have dried up the main source of revenue for the loss-making company formerly known as Twitter. A recent decision to sue them for heeding his own advice to not buy ads on the platform hasn’t helped. At some point, he will have to provide a fresh infusion of cash to salvage his $44 billion takeover.
That would require him to take Twitter public again, for the record (that may well have been your meaning, but I'm clarifying because a lot of people aren't aware of this). The odds of a second Twitter IPO doing any kind of numbers is basically zero at this point. It's been a very public trainwreck for the last year. Might as well try to sell tickets on the Titanic after the iceberg hit.
Don't really know about the legislation wherever, but usually it's quite possible to trade part ownership in companies even if they're not publicly traded. That's what most companies in the world are like. I know I've owned unlisted stock.