This isn't about socialism and capitalism, but about growth and concentrated wealth. All political
As you can see, nations with the highest inequality don't look anything like emissions per Capita, except for the US. The Netherlands is a good example of low inequality but high emissions per capital. Chile is a good example of very high inequality but low emissions per capital.
Heck, one of the top self proclaimed "socialist" countries in the world, Venezuela, survives out of fossil fuel sales. Their fossil fuels are government owned and "for the people". The fossil fuel they sell to pay for their socialist paradise emits as much carbon as capitalist Texas oil.
I'm not saying that inequality and AGW are somehow interrelated, or that one causes the other in some sort of correlation.
You compare apples and oranges. You can't compare Chile and the Netherlands, because the latter is decades ahead. Given enough time, Chile would reach Dutch conditions, using the same system (as the system is global, which also makes comparing individual countries unproductive). Conversely, inequality was greater in the Netherlands in the past.
In some countries there will be less inequality and more emissions, or more inequality and less emissions, or any combination you can think of. Because AGW and inequality are just two of many consequences stemming from the same system. Some countries will have more depleted soils than others, others suffer more from financial bubbles, yet others are involved in resource wars.
All of this is caused by need for GDP growth to fuel, grow and further concentrate concentrated wealth. You can't solve any of those problems, if you leave the system as is.
We must disagree about socialist and capitalist policies and reach an agreement that neither of us likes but solves the problem that will end both capitalism and socialism.
I don't know if stopping concentrated wealth to act as a black hole, will necessarily end either one. But I agree it would be something entirely new. This hasn't been done since primitive times, when in some tribes there was a taboo on excessive egoism and material accumulation. If this taboo doesn't return, nothing will be accomplished.