There are a other systems that we have at least some historical evidence to show will produce even better outcomes for the majority.

The problem is those are undermined almost as quickly as they are brought up. See post about brainwashing people to protect the bottom line.

People point to places like Venezuela and USSR as examples of socialism not working, for example. While ignoring that both those states were not managed by the working class (as classical socialism typically calls for), but elite masters, their bank rollers, and external forces pushing them to abandon their ways for western capitalism (economic sanctions, cutting off access to necessary trade).

By some measures, all of which fail to account for the fact that relative deprivation is a substantial source of experienced disutility.

That really depends on the definition of »works«. If one is satisfied with the people doing the heavy lifting being a bit better off while a few overseeing everything are extremely better off, yes, then it works.