While I definitely agree with the approach, would it not make sense to also run a wealth tax alongside this, to ensure that assets aren't just stored outside of the US?

I'd be all for all of the below:

• Taxation on loans taken against collateral above x
• A cap on executive pay, especially in instances where an executive is paid more than the company takes in income. This would stop instances like Musk getting paid a fuck-ton when their company has very little income.
• A wealth tax to take a percentage of wealth, with yearly audits of accounts held by wealth management firms to ensure that no one is fiddling with the books.

The problem with some of the listed names is that they don't own their companies. Bezos hasn't owned Amazon for 3-4 years now, and he's been dumping stock for years. If we only taxed against specific types of collateral, the rich would just move to something else.