Yugoslavia also had severe political repression, with peace between the provinces only maintained by a (near) dictator with a cult of personality. Their economy and standard of living was mediocre at best, and only even possible within a limited geopolitical context where they sat between competing superpowers. It wouldn't be possible to create something like Yugoslavia today. Stupid to even try.
>>nradov+(OP)
I'd argue the repression of reactionaries was part of the secret sauce that made it work so well. We saw what happened when they were loosened in the 90s.
>>nradov+qm1
I'd posit that the rise of the Nazis (which caused the rise of the SFR Yugoslavia as a resistance movement) taught us differently.
Karl Popper, himself an Austrian that saw the rise of the Nazis and had to live in exile as a result famously formulated it as the paradox of tolerance.