Having a strong "socialist block" could easily have the reverse effect whereby political discourse is scared away from socialist ideas as they are considered to

Having a strong "socialist block" could easily have the reverse effect whereby political discourse is scared away from socialist ideas as they are considered to be evil communism (c.f. McCarthyism). I would consider that a lot of mainstream media (owned by rich and powerful people) has attempted to keep alive the idea that socialism is the enemy and needs to be fought against.