I've been hoping to see solar energy get mainstream since I was a kid. By now, I'm truly convinced the only reason we don't have solar energy everywhere it's because of heavy lobby from the energy sector to keep the status quo.
I mean, Tesla has a whole factory - one of the biggest ever - relying mostly, if not only, on renewable energy sources. Why can't we power our own homes the same way? We have better solar panels, better batteries, low-consuming devices... Our homes should be at least 75% solar-powered by now, by default.
We can actually do it, but between the still high cost of the system and the nightmarish bureaucracy to get the city permit to do it, there's little incentive, even if, ultimately, the benefit would be for everyone.