>>468771From the perspective of historical materialism, class societies are pre-history, where humanity build up the material base for socialism and that's when history proper begins. During prehistory various class societies arise because higher level organization isn't sophisticated enough to prevent ruling classes from siphoning off wealth.
We are sort of in a temporary troth of labor power at the current moment of prehistory. Your pessimism is the result of lacking perspective.
The capitalist system is the last viable type of class society, of course a transition to socialism isn't guarantied but the alternative is the ruin of all the contending classes.
You can pretty much rule out that any new stable form of class society can arise. You can see that now, the more the current neo-liberal ruling class tries to consolidate power, the worse the economic systems they operate function, that's an early sign of class rule phasing out. When the capitalist class was in the ascendant it meant that the economy worked better the more power they got, not worse.
If there was any chance for perpetual class rule, it would show it self by producing greater prosperity. The best performing capitalist economy was when the social democrats reduced the class-power of the bourgeoisie. Basically you need powerful labor unions and a Soviet Block generating ideological pressure for capitalism to work right.
I think that the neo-liberal phase was a regression, but Marx never claimed that progress would be a smooth continuous upwards climb, he said that there could be setbacks too.