Mikhail Gorbachev's ideas of glasnost (openness), perestroika (restructuring) and demokratizatsiia (democratization)

What impact did Mikhail Gorbachev's ideas of glasnost (openness), perestroika (restructuring) and demokratizatsiia (democratization) have on Communist society? Were these principles compatible with collectivization and a command economy? Did Communist leaders favor these principles, or did they feel that their hands were tied once they were introduced into Communist society?