But it took years for leaded gasoline, asbestos, and freon to be replaced. And that only happened because they were made illegal or regulated out of certain use

But it took years for leaded gasoline, asbestos, and freon to be replaced. And that only happened because they were made illegal or regulated out of certain uses, not because a better alternative existed that the market preferred. This is a job for a functional government, not for capitalism. But it doesn't sound like help is on the way anytime soon.