I think I agree with scrivner (but words are slippery things that change meanings in the next sentence).
I wrote the below separately and without any intent to parallel, using the understandings of capitalism as "private ownership of the means of production" and socialism as "public ownership of the means of production", where "the means of production" represents both resources from the land and from the labor of individuals.
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Capitalism and socialism are not on opposite ends of the same vector. You can have a high degree of capitalism and a high degree of socialism in the same system.
The "means of production" always includes both resources from the land and from the labor of individuals, so the concept of capitalism often becomes merged with the idea that forms of slavery are acceptable. This includes actual, economic, and social slaveries.
Since any form of slavery causes a loss of individual representation, any system that expresses capitalism without expressing socialism is a system where the individuals who are best at mis-representing others move to the top of the heirarchy. At the top, you will find people who are a source of lies, coercion, and selective murder, and at the bottom of the heirarchy you will find people who are used like cattle in all the best and the worst ways.
Any system that expresses both capitalism and socialism is a system where the individuals who are best at fairly representing a diversity of individuals would move to the top of the heirarchy. At the top, you will find people who are a source of transparency, diplomacy, and evaluation. A highly capitalist and highly socialist system is one that doesn't allow one sub-group of its people to apply social, economic, or actual slavery to another group, within or without of their system.
Currently, in our world and time, there are politicians within the EU, the US, and other nominally democratic countries/federations, who are involved in hidden alliances and trade with countries that have actual slavery.