"Just think what kind of culture, music, science, ideas might result if all those people were liberated to do things they actually thought were important."
Would this really be true? I've heard that an artist needs something to struggle against, something to constrain the medium they're working in, to inspire the creation. Just having it be wide open is not optimal.
I think it's much the same for any field. You have to be challenged to have your spirit moved to take action. You have to have a focus for your intent.
Just having copious amounts of free time might not be the cornucopia of wonderful ideas and creations proposed in the article.