The governments are getting organized so as to prevent anyone from having assets for which they can't show a paper trail indicating that they have paid all their taxes and that the wealth was not ill gotten such as money laundering.

It is possible that in a Marxist global collapse (or even only your own country which claims you as a tax slave for a wealth tax), the governments go bezerk and basically confiscate all wealth. This would be a Dark Age if it were global.

This problem was quite easy to solve with cash, you would open a business then spend you cash as a customer at your own business thus laundering the cash and making it legit. (note I am not advocating illegal activity, but rather just stating what others did)

But governments are eliminating cash.

And gold can't serve this function, because nobody pays for anything with gold any more.

This is why a crypto-currency that has a high amount of use for payments on the Internet for the Knowledge Age (think of micropayments for example) can serve a function that gold used to provide (but no longer does) as being a way to preserve assets. Decentralization will be a crucial feature of such a crypto-currency and nobody has shown such a technology yet.

Until the world government has a 666 id on every human on the planet, then there is no way they are practically going to be able track every micropayment. We are still some decades away from that 666 result.

Remember my thesis is the monetary systems of the world will bifurcate into a usurious fiat system seving the dying Industrial Age and a crypto-currency system serving the fledgling Knowledge Age. Let the Marxists have their dying system with SDRs and national currencies enslaved to the SDRs. That is not for us. We are moving forward. It is very likely that the Marxists are going to cull themselves. We should not subscribe to their system.

Tinfoil hats are living in some archaic delusion and are going to miss the boat.