The reason the ongoing drop in battery prices matters is that they are essential for the saving the environment by getting the planet off of fossil fuels. That

The reason the ongoing drop in battery prices matters is that they are essential for the saving the environment by getting the planet off of fossil fuels. That being the case, the relevant question is not whether the prices will continue to drop forever at the present rate. Rather, the question is whether they will drop low enough to make the transition possible. Well, they are already low enough to do that for some uses, and a good deal more price reduction is expected in the coming decade, so it seems the answer is yes, they will drop low enough.