It boils down to cash.
Companies can make money off penicillin. Governments can readily allocate funds to visible, common disasters.
Disasters that have been a century in the making and require whole nations to change the way they do things for an observable result decades down the line is almost impossible to get money for. Our shortsightedness is our downfall
I recommend looking up The Deathworlders for a similar feeling. Or better yet, the origin story for that from the Humanity Fuck Yeah community. I forget the exact name, but something Jenkins.