>>60563437 (OP)
You probably mean communism. There were some public stocks in Soviet Union. But otherwise, not much choice. If you mean socialism as social democracy, then yes, it is just more regulated capitalism.
>>60563437 (OP)
France is a socialist hell. You can buy stocks, but they'll take 30% of the profits when you cash out, and everyone will look at you like you're a bloodthirsty vampire even if you only have one share at $10.