Why not just tax wealth at steeply progressive rates? If the robots result in increased wealth inequality, a wealth tax will counteract that. If not, then it means the introduction of robots led to more broadly-based benefits.
Either way, I'm so sick and tired of people talking about the effect on GDP. GDP is a terrible way to measure anything remotely meaningful. GDP has gone up and up and things have gotten worse and worse for more and more people; GDP could go down a lot and things could still get better for many people. Without some kind of (in)equality adjustment, GDP is meaningless at best and misleading at worst.
I support the concept of taxing wealth, but I've yet to find a good way to implement it. The two biggest issues are that wealth is easily moved to places where it can't be taxed, and those making the tax decisions are easily influenced by those with wealth.
Wealth moves in lots of ways. Yes, as has been pointed out, we over value stock assets. When you own a significant percentage of a company, you can't just sell that ownership at the last trading price (the stock price would quickly crash). Wealth is also moved between national borders, allowing the wealthy to shop for the lowest tax location to stash their funds. Property can't be moved, but it can be financed with debt, making it taxed at effectively 0%. And the other side of that debt may just be an overseas shell company. There will be entire industries formed around avoiding a wealth tax, funded by the wealthy.
But probably the most capital efficient way to avoid the wealth tax is to buy politicians, influence the elections, and invest in lobbyist, which the wealthy do in the US to avoid taxes. Until money is removed from politics, I'm not holding out any hope that we'll find a way to tax the wealthy.
> Why not just tax wealth at steeply progressive rates?
You likely live in a wealthy country - your wealth should be taken from you and given to a poorer country.
You don't deserve a car when there's people who don't have a bicycle.
> Why not just tax wealth at steeply progressive rates? If the robots result in increased wealth inequality, a wealth tax will counteract that.
It has been tried. Wealth tax means rich people (who already pay most of the taxes) are leaving the country, then the state gets fewer taxes, not more.
Taxing income is straightforward in that there is a stream of it going by and some of it can be diverted. Taxing wealth is difficult because you don't really know what it is.
Arguably the value of a publicly traded corporation can be known because it is being traded continually. [1] For a privately held corporation it's quite opaque. Right now, for instance, Open AI is estimated to be worth $500B and might IPO at $1T but for all we know it could be a smoking hole in the ground in two years. Should we charge them a big bill in 2025 and then have the investors asking for a refund in 2027 when the real value is revised down to negative? Owners of imagined wealth could face big bills that, in the end, they couldn't pay. [2]
There would certainly be an incentive to avoid the taxation by minimizing bubbliness which might be a good thing but administering it would be a nightmare and manipulating the system to hide wealth would become a national sport.
[1] ... but it could be wrong seen from a future viewpoint
[2] I spent a lot of time in the 2010s calling up people in financial services on the phone and talking on the phone and there was no phrase that struck more fear into them than "mark-to-market", I could hear the voices crackle and feel the flinch. A bank or other institution that is perfectly able to make all its obligations as they unfold over time could be nominally insolvent at times when the market fluctuations down but winds up OK in the end -- the kind of accounting it would take to make wealth taxation accurate might be the end of fractional reserve banking and send us back to the giant Bitcoins of the Yap islands.