“Sorry kids. We had the solution to limitless clean energy but it was just a bit more expensive than others, so we passed. Too bad about the devastation. Lol.“
https://www.lazard.com/media/451419/lazards-levelized-cost-o...
http://ieefa.org/wp-content/uploads/2021/03/US-Power-Sector-...
Point being, saying one energy source is too expensive Vs another is an idiotic argument should one lead to decarbonization.
But sure guys, go ahead and throw trillions on economic bailouts every several years but wring your hands at moderately more expensive energy.