I'd argue Spain wasn't a good example, since it fell to the forces of reaction.
I know I'm being reductive and I appreciate your input, but I'm just trying to say that while there are many ways to approach the question of how society should be economically structured, it must be anchored in the material reality of what threatens your society, what opportunities and weaknesses and opportunities it has. I also gotta be honest that it is not a discussion that really interests me, as it is quite far from ever being relevant to me.
The discussion is interesting to me only insofar as to understand why the existing socialist countries are structured as they are. If you haven't already seen it I'd like to refer you to this short excerpt from one of Michael Parents Talks https://youtu.be/uThpIDlfcBQ?si=OHOPASxctMMemkNG