No, and partially yes
So you would not consider Cuba, China, NK to be socialist? What are they then?
Transitionary states developing their productive forces. Cuba might be close or was close, but they don’t have the technology or even the scale to develop them.
If it isn’t state ownership it’s private ownership.
Why does state ownership safeguard the revolution? What would happen if the state is taken over by capitalist elements?
Sounds like State Capitolism