Many fossil fuel executives are celebrating President Trump’s move to dismantle the Obama administration’s Clean Power Plan. But their cheers are muted, because market forces and state initiatives continue to elevate coal’s rivals, especially natural gas and renewable energy. In coal’s favor, there is the new promise that federal lands will be open for leasing, ending an Obama-era moratorium. Easing pollution restrictions could delay the closing of some old coal-fired power plants, slowing the switch by some utilities to other sources.