The scale of Chinese production since 2010 has driven the price of these technologies down by 60 to 90 percent, the researchers found. And last year, more than 90 percent of wind and solar projects commissioned worldwide produced power more cheaply than the cheapest available fossil-fuel alternative, they said. That cost advantage might have seemed laughable before China began pumping billions of dollars of subsidies into the sector.
Toyota isn’t driving adoption of cars because 1. cars have already saturated the market, so there’s no need for ambassadorship and commercials assume people need cars 2. Toyota has 14% market share, not 70%. Same for Saudi crude. None of these are true for wind or solar or batteries.
You don’t show that this would have happened anyway. The article’s point is that China’s production played a large role in making it affordable and their research a somewhat smaller one.