Daniel Taylor@bthall a market can only emerge for a good if there is some direct profit available in a way that market actors can reach in a reliable enough manner, and with a margin of cost proportionate to the incremental revenue and risk.
There's a lot of goods for which that simply isn't possible, or hasn't been the case so far. Some of them are necessary goods.
This is where economics as a science necessarily bumps up against the disciplines of business and politics.
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