Good point. But the trouble with that is market forces. Stupid crap like this story:
https://www.forbes.com/sites/jamiec...n-to-multi-quadrillion-dollar-asteroid-is-go/
It presumes that if you flood the market with an asteroid-sized glut of minerals, their market value won't plummet.
Similarly, if you have the ability to do that and are worth more than $1 trillion, market forces probably means some despot with a paramilitary army will kidnap your ass Brazil style, attach electrodes to your nutsack, and make you cure people at their will for their profit.
At least if you start with $1 trillion in hand you can hire a security detail to prevent it from getting that far.