[cscurmudgeon]

Yes, and I can even bet that unless a species is a hive mind, any intelligent species will have something like capitalism. The inverse is that to enforce a non-capitalist system, you have to brutally shape a society into something that is like a hive mind.

[noduerme]

This seems true from our experiences attempting to implement non-capitalist systems in large societies. I think there could be a caveat for very small societies, especially those voluntarily joined, in which sharing goods and labor is possible with democratic modes of conflict management. There are also non-democratic capitalist systems that resort to extreme repression in order to resolve or suppress internal conflict. At scale, I agree no other economic system seems as compatible with democracy and individual choice, but as recent history has shown in Russia and China, capitalism itself doesn't seem sufficient to give rise to liberty.