The academics see "socialism," as Norway, but not as "Venezuela."
They overlook entirely the failed USSR, which failed economically because the basic premise failed.
In reality the best examples of Norway, Sweden, Denmark prosper because they have (had) homogenous populations of educated modern people. And the engine of their success is capitalism, free enterprise firms that pay a lot of taxes. They are "mixed" economies.
Install socialism/communism in primitive "hunter-gatherer" societies and they remain hunter gatherer societies.
If you conducted surveys in former USSR satellites in Eastern /Europe, those folks would likely tell you they prefer capitalism, to socialism.
Those people identify with the US, not with Russia or Cuba.
I once had a conversation with a high school teacher. She had an MS in "education." She spouted off the socialist crap. I asked her how many econ. classes her undergrad and grad. curriculum included. Zero, zed, nada, nichts.