Why is it necessarily a disease and not a natural part of the human condition? It seems to me like if we were the sort of beings to say “this is enough”, we would have never made it out of hunter-gatherer.
Ambition and curiosity are separate instincts from greed. If you think all innovation comes from greed, that itself is a cultural belief and cannot explain the greatest innovators in history like Einstein, Newton, Da Vinci or Tesla.
The icon of innovative greed would be someone like Edison who was a profoundly cruel and greedy man who stole the ideas of others more tab he created himself. There's your icon of capitalistic innovation.