Investment in public assets that take up the slack in the labour market and /remain/ public assets is the alternative to UBI I want to see.
An asset like a solar plant or a HVDC line produces revenue for the public. And there's no reason an independent publicly owned corporation can't function well.
I'll admit guaranteeing that the revenue isn't wasted by a government that becomes addicted to its revenue streams is another problem. (Denmark has a bridge with €30 plus tolls that were promised to become toll free once the loans were paid off. Never happened. Norway seems to do a better job with its oil fund.)
To bring China back as the reference, important government posts are extremely prestigious and held by very capable people. Outside of propping up their stock market, it is hard to fault their public investment stategy.
However, I disapprove of the surveillance state and the human rights abuses.