I assume you are too young to remember “communism with a human face.” It was a slogan suggesting making the totalitarian ‘communist’ regime in the Soviet Union somehow more likeable.

Capitalism as a system is in a very real sense irrelevant. The fundamental problem is the central-bank monetary model as it currently exists.

In that system all money enters the economy as debt. That establishes the investor class/debtor class dichotomy, with all of the iniquities that follow from it, at the core of the economy.

A UBI would not solve that problem. A DDI (“democratically distributed income”) would.

A DDI would supply the economy with money in the form of an income paid to individuals that would be created as needed. So it would be free.

As I envision it, it would not be a UBI (though it could perhaps be one). In my proposal, though, it would be available for an unlimited number of people. It would be based on the median income, so in the U.S. $15/hr.; $600/wk.

A DDI would provide the means to eliminate unemployment and poverty — at any level of GDP. (There is also a ‘home employment option’ whereby one parent could be paid the DDI for performing that role.) The same process could be used to fund government, eliminating the need for taxation/public debt. Sustainability would be increased because the ‘need’ to maximize output in order to maximize employment/income/taxes would be eliminated.

If interested, “Re-thinking the Economy’s Fuel System” (by me) is available here in Medium. That is a longish “read.” A brief (“5 min read”) summary of the proposal is here. (There I refer to the DDI, more neutrally, as the “allotted income.”)