You are asking me about implementation difficulty, difficult implementation doesn't mean idea is not worth it.

One example:

* 300k vs 300M - doesn't matter if I said 100M, 200M, 550M, if you think 300M is not enough for you and your family to afford anything, not sure how other people are surviving for even less.

Here is why I think this is good:

1. Ambitious people will still be ambitious, its rare some genius kid says: I know this is 100B idea, but I won't build it, because I will only own 1B of it.

2. Limits the power, when power is really limited, people will be forced to focus on different things. For example, if you had plans to take over the world by making $10T and creating an army to kidnap president of another state you don't like, then you would know, it is not possible to make 10T, its not only about how much, its about suppressing hungry animal in you by capping your limits.

3. There is a chance "bad" ambitious people, will be converted to real philanthropist, because they know it doesn't matter to own more than 1B anyway and they can't own it.

> You are asking me about implementation difficulty, difficult implementation doesn't mean idea is not worth it.

I can agree with that idea, to an extent. If something is near impossible (not saying this is), then it does become not worth it.

The other questions the parent posed are more interesting to me:

> How would you determine the worth of rare, illiquid or intangibles? What about wealth held in trusts or companies? How does the accounting work if I borrow against my wealth? What happens when things change value dramatically in a short period of time?

Another I wonder is that (ignore all specifics of the values, just the concepts matter here), let's say you own a private business that then becomes valued at 1.5 billion dollars and this individual has 20 million dollars liquid. How do you tax that? The government can't take one third of the business, at least not without a lot of issues (in business dealings and individual rights), and the 20 million liquid wouldn't come close to what this plan would value. What do we do then? Plenty of billionaires don't really have liquid cash and forcing liquidation of assents in such a way seems like it would be very difficult.

I'm all for more taxes on higher net worth individuals, but I think there's a lot of talk to be had on how one can implement this. It's going to be really difficult to find a way that makes sense.