I think you're handsome too, reader. Don't listen to the haters.
Nah, they are supposed to be unique. If it was that it'd at least be a design choice potentially worthy of criticism. But consider, who's more likely to have fucked up a database task: Musk? Or the designer, someone with a degree (a real degree) on this topic?
Don't worry: since he's so big on transparency, I'm sure he'll release the schema so we can check his work... đ
Tax = Purchase Cost Ă Minimum Wage(Moment of Purchase) Ă· Minimum Wage(Moment Tax is Charged)
You can multiply that all by a magnitude term, depending on the taxation frequency, or to charge more/less.
This is a totally arbitrary formula intended to discourage holding non-cash assets that provide no intrinsic utility, and it incentivises owners to raise the minimum wage.
It isn't hard to come up with these sorts of measures, in fact I bet you the reader have some ideas about how my suggestion can be improved. A team of experts could come up with something much better, and they can be enforced.