Maybe because you can keep your coal fired base load (and associated sunk cost/asset value) and then have renewable powered CO removal. If you are going to do t

Maybe because you can keep your coal fired base load (and associated sunk cost/asset value) and then have renewable powered CO removal. If you are going to do this why put up with a puny 400ppm when you just go to a rich source of CO2, cut out the middle man (the atmosphere and entropy!). You can also make a different thing out of the captured CO2, maybe a building material instead of a fuel.