Investment bankers have to report their income like everyone else. There are no people that produce money out of thin Air the Government does that.
Nope. They don't. Not in reality. They have many options how to dillute and hide their wealth. And they basically control governments. Otherwise, would US FED be a private organization? Shouldn't it be really a federal institution, owned by the govt, instead of being owned by the bank members? Why would US Treasury give the printing/production privileges to a private consortium, unless the private consortium is actually in charge.
And why would US Treasury get their own money as a loan, which must be returned to the banks, instead of just producing its own money, like a real free govt would do? Same thing is now with EU Central Bank, which is not owned by the EU members anymore.
The same is the case with many other central banks, for which the ordinary people assume are state owned, but are actually owned by private entities. Those entities earn a lot more than any normal corporation, or a cluster of corporations. They control the money.
And when it comes to investment bankers, go to Yahoo Finance, check any big corporation and you'll find they are all owned or controlled by just 2 global funds. Almost any big corporation in any country...... all owned or majority controlled by 2 funds. Then in the end you find out that Fund2 is actually also owned by Fund1.
So, Fund1 controls it all. And for Fund1 there are no public records who are the owners, as it's shares are not public. Guess how much money something that owns or controls almost everything else earns annually. Hint, much much more than Tesla (which is probably also in the hands of those funds). And the owners are unknown.