That way is far too slow to combat issues that are threatening to our survival. I’m not sure that we have time to wait for the market to “adjust itself” based on changes in demand, especially when those changes aren’t very widespread and there’s a significant amount of people who don’t believe it’s even real and will go out of their way to be more harmful to the environment. It’ll take more than a couple US states banning plastic straws before they no longer become profitable, for example.