How tiny of a fraction? Can you quantify this for us?
In principle I think some kind of wealth tax on fortunes above a certain level would be a good idea. But there are a lot of practical implementation problems in terms of identifying and valuing illiquid assets. Like for example I have friends who own forestry land (for softwood timber harvesting) in a foreign country. Those assets have some value but trade infrequently so there's no reliable market price. And they probably hold the assets through a foreign corporation rather than directly in their own names. What is a "fair" amount for them to pay in taxes, and how would the government enforce that in a consistent and cost-effective manner?
It's taxation, not brain surgery. If political will is present we can figure out the accounting. The central question is whether we want to drive the economic output of nearly the entire economy into the hands of the 50 richest people in the world, or if we feel that split should be more equitable.
It's always odd to see this dichotomy on HN comments:
1) I'm amazing, I can solve any problem, I'm enlightened by my own intelligence, I'm the mover and shaker who drives all worldly productivity, and I do it by wrangling the newest technologies in the most imaginative creative and intelligent ways, no problem is too great for my superior intelligence!
2) Pay taxes? Ah but, uhh, that's impossible; like ... who decides? There, there's a dealbreaker for you! Hah! And anyway how much? I.. I... there's complexity, don't you know how difficult and complex it is to ... own a forest? Nobody could make a decision, I can see already that the combined might of a nation's experts could not come up with a figure, forget AI, this is just ... give up already, come on, some problems are forever out of reach.
In principle I think some kind of wealth tax on fortunes above a certain level would be a good idea. But there are a lot of practical implementation problems in terms of identifying and valuing illiquid assets. Like for example I have friends who own forestry land (for softwood timber harvesting) in a foreign country. Those assets have some value but trade infrequently so there's no reliable market price. And they probably hold the assets through a foreign corporation rather than directly in their own names. What is a "fair" amount for them to pay in taxes, and how would the government enforce that in a consistent and cost-effective manner?