Profit motive is the most reliable way to make sure your needs get met

Parafraseando a Adam Smith, Leeson (The Invisible Hook, p 178) dice

“Without the grocer’s greed, you’d be scratching for tunips in your backyard. Without your landlord’s greed, you’d be living in a tree house somewhere. And without your employer’s greed, you wouldn’t have a job. The beauty of markets is that they harness individuals’ greed and make it service other people’s desires”