Response to climate change is driven by three considerations: Public opinion, government policies and incentives, technology and its cost, and the market. The market is not, as some ideologues imagine, an independent driver of affairs; it plays by the rules set by the government and technology. But at the same time, the market is an efficient means of setting prices and distributing goods, and so has an enormous impact on consumer behavior.

Source: When will gasoline cars be illegal? France throws its Beret into the Ring | Informed Comment