[setr]

Assets are taxed. If your money is 100% illiquid, you’ve done something dumb. You prepare to liquify to settle your taxes yearly — if the taxes are higher, you liquify further; the equation isn’t changing.

That is, the format of your money is irrelevant to whether you can be taxed more for it.

[beaconstudios]

It may be irrelevant for taxation purposes, but not for narrative purposes - there's a pervasive "the rich people are hoarding all the money" narrative that just isn't true. I'm pretty ambivalent on the tax front. I think UBI might be the way to go but I wouldn't say I have researched enough to say it'd work as intended.