I'm getting the impression you didn't get my "haggling over price" reference. This conversation is in the context of a wealth tax which typically only applies to a very select group of incredibly wealthy people. However, your complaints are all about the scale of the economic problems this would create. That means we can continue to add restrictions to this proposal until eventually all the issues you raised disappear.

For example, imagine we only apply this to people with a net worth over $500B. That's literally only Elon Musk. He has plenty of money to hire his own team of quants to price his assets. We can even be generous with this law and make the purchase price double the valuation. Hell, we can even restrict it to only apply to stock of publicly traded companies so the wealth valuations are highly informed by market pricing. We can just keep adding rules like this until you're out of economic reasons for why a wealth tax and/or this form of valuation can't work. At that point the debate is lost and "we're just haggling over price" because once we apply it to Musk, how can you argue against applying it to Bezos...