Your thought compelling and detailed argument on the validity and universal truth of capitalist economics is nauseating. I do not blame you though, you are a member of the most powerful global policing organizations with the most diverse propaganda system.
Of course there are alternatives. Look to Cuba, although they are far from democratic (US is as well) they have the most astute literacy & infant mortality rates in the world. For a country that is economically ostracised from the world, that is quite a feat.
Imagine, just imagine if a world system could be implemented that embraced humanist values and economic equity instead of a blood thirsty, dog-eat-dog world of global capitalism.
None.