One thing that doesn't get mentioned is that the article mentions 3 of the most socialist states in the world and doesn't make any correlations there.
But as others have pointed out, these is all essentially a money making game based off of whatever rules the government is setting. The interest and desire isn't to save the world, it's to make money. At some point the piper has to be paid when the government manipulates the markets, which I think is probably the root of the high prices.
MA incentivize PV panels and now there are so many that it's actually disrupting the grid. Now they're incentivizing battery storage to balance that out. We'll see what problems that produces 10 years from now and how they incentivize the fix for that.
Of course this technology was sold as exactly that, 'saving the world' but ultimately, the 'right' people made big bucks selling it.