Is socialism? Almost the entire world is against them except Russia that uses them occasionally as a thorn in the side of the United States.
America's gearing up for war with them. Prior to that we had cut them out of the rest of the world and all of the global markets.
So I don't think Venezuela which is under active attack by every capitalist nation in the world is a fair representative of alternatives to capitalism.
I do think we live in the real world though and we can't pretend that socialism works even if the only reason it doesn't work is that billionaires, who are themselves vehemently opposed to capitalism, will sabotage it making it impossible to properly implement.
The important thing to remember is billionaires do not support capitalism either. So capitalism is going to get sabotaged by billionaires too and therefore capitalism is not an alternative to billionaires.
We are going to have to figure out a third way. Because both capitalism and socialism have failed us.