And look at what happened to SolarCity, and similar firms. That space is unable to operate profitably, despite large federal subsidies. It also has no shortage of scammy ownership/loans-for-your-solar-install model, is a bad investment for most homeowners, and doesn't even answer the hundred-thousand-dollar-per-home question of peak energy storage. (Or how it can operate in a world where you are on an even playing field for selling power to the grid as the utility.)
The home solar industry makes most power utilities look both efficient and competent.
Also, look at the hilariously high cost of electricity in PG&E territory. If you can deal with storage and peak loads, on-site generation is competing with 20-40 cents / kWh charged by PG&E, not the vastly lower prices that PG&E pays for generation.
Utilities are often privatized monopolies these days, that's not at all a safe assumption. Look what happened with California and Enron.
https://en.wikipedia.org/wiki/Enron#California's_deregulatio...