Politicians need votes to remain in power. They lose votes if electricity is expensive. Lower demand and therefore low revenue in the face of fixed grid maintenance costs mean prices have to rise. Higher costs to voters terrifies politicians.
The politicians do get paid by captured corporate interests though. And some of those are energy generation interests. Until solar companies captured some of that interest, solar subsidies and cost remained high and unsupported by regulatory interests - when capture is there regulatory interest support the alternative power.
Sometimes these captured interests can even block and harm progress that's better for society. I'm sure I don't have to break this down for you further. Surely you can identify examples.
Politicians need votes to remain in power. They lose votes if electricity is expensive. Lower demand and therefore low revenue in the face of fixed grid maintenance costs mean prices have to rise. Higher costs to voters terrifies politicians.