Huh. It would be a great irony if the realization became that capitalism and socialism need each other to thrive.
In a way, perhaps capitalism can be seen as the 'liberal' side, where there is an explosion of development and innovation at the expense of stability, social cohesion and safety.
Maybe our biggest long-term challenge is figuring out a way to maintain a balance and keep either 'side' from winning or at least stabilizing the oscillation a bit.
The original canonical work on capitalism, Adam Smith's "On the Wealth of Nations" lays this out clearly.