Do we make them give 20% of their unrealized paint to members of the public so they can make their own paintings, hoping they too will fetch $1m each?
If the IRS took control of 20% of the paint, borrowed against it to fund the state, but then the artist decided to quit does the government somehow force them to paint?
If the artist said this ahead of time and this was priced into the future value of their paintings (now worth $0 because there will be 0 paintings) does the IRS revalue their unrealized gains down to $0bn?
You learned in school that electrons orbit atoms, but that’s not how it really works is it? Trying to reason with a simplified model in mind can only lead to misunderstanding.
Electrons don’t have orbits. Capital gains aren’t paint.
For me, it’s as simple as: you can only tax actual dollars, not unrealized, hypothetical capital gains. What’s the best way to get that point across?
Personally I disagree, because while the gain hasn’t been realized, you can act on the assumption that it can be realized at any point. There are really degenerate strategies once you get to this level of wealth, such as taking out loans with these “unrealized gains” as collateral and realizing the gains without paying taxes.
Anyway, here's the problem with unrealized gains. If stock go brrrrr up 10-fold, wow! Huge unrealized gains! Get taxed on it. Unexpectedly, now the stock crashes, or it's found the company was doing something illegal, or the finances were fraudulent, or it was a ponzi scheme, etc, etc. Now stock is worth -zero- dollars overnight. Now I don't exactly what the logistics are going to be, but even if you hit those unrealized gains in tax year 2023, and the stock collapses in tax year 2024.. you had better get those gains that you were taxed on (but never got!), you had better get them back, plus interest.
In your example, a stock went up 10x overnight. Mature stocks don’t do that, so you must be investing in something very risky.
What a tax would do is incentivize you to realize some of your gains to pay the tax. If you don’t want to do that and would rather keep gambling, then you’re free to do that. If the stock then crashes and you lose all your money that’s on you.
Obviously you have to think about implementation to make sure you’re not charging a tax that people can’t pay, but that can be figured out.