The USSR was state capitalism, it is not an example of another system, or of anything happening outside capitalism. Since at least the early 20th century all states have inextricably part of the global capitalist system. I recommend the book "State Capitalism: The Wages System Under New Management" by Adam Buick and John Crump https://files.libcom.org/files/State%20Capitalism.pdf
All the examples you give continue to reflect the conditions and conditioning embedded in the world-wide capitalist system, not examples of people acting outside of its influence (both material and mental).
>>Societies all around the world tried different systems and due to material pressures and historical contingencies we've arrived at this point.<<
I do not believe this narrative at all. Nobody voted for capitalism, nobody "arrived at it" after everything else failed. It did not arise spontaneously around the globe. Capitalism was violently forced upon the world, continuing on the heels of colonialism.
I absolutely reject the notion that it is a natural inevitable result of any kind of "evolution" and frankly I find no legitimate use in applying the word "evolution" beyond it's strict biological meaning. I can put up with casual usage, but not in a serious discussion when it gets used as a sort of authoritative shorthand.