Why isn't the market choosing the least harmful, least lethal energy sources? Energy is for the most part entirely substitutable: switching costs for consumers like hospitals are basically zero.
(Everyone is free to invest in clean energy at any time)
> The main barriers to the widespread implementation of large-scale renewable energy and low-carbon energy strategies are political rather than technological. According to the 2013 Post Carbon Pathways report, which reviewed many international studies, the key roadblocks are: climate change denial, the fossil fuels lobby, political inaction, unsustainable energy consumption, outdated energy infrastructure, and financial constraints.
We need to make the external costs of energy production internal in order to create incentives to prevent these fossil fuel deaths and other costs.
(Everyone is free to invest in clean energy at any time)