It's good in paper but it's more complex at it seems, you need full cooperation for public and private sector so most likely they will clash in the end. Plus will government allow that kind of setup? I don't think that they would allow old and traditional just run over by crypto is this is what you are trying to drive out here.
Taxless, Right look at the Examples:
Monaco_Rich People, Even workers who serve rich People Get Good salary. (The little% saved by Not paying taxes goes to workers from rich)
Now Other Example: Finland and Norway they have heavy taxes.
But Country is well developed government have strong social security system.
Now look at the countries where taxes are not high and not low, they have problems!
So the best way is either no Taxes at all or high taxes like Finland.
You look at the countries like Moldova, ukraine... Baltic countries, those countries the tax is not high but its not low... Its something between, Are they doing fine? No!
If the taxes are high then the government must be strong to make sure the tax payers money goes for benefits of citizens!
Me personally will prefer no taxes, we should privatize everything just Some% for insurance funding in Case Something goes Wrong the all Country have insurance!
If something is privatized it means someone will have responsebility When someone have responsebility its a thing what Can be Functional.
When Everything is owned by Everybody then nobody will not care about Nothing nobody seems to not have responsebility/liability so that Kind of system Can not last long!