First, capitalism unleashed the industrial era which set the stage for the unfolding catastrophe.
Second, as a system capitalism is uniquely ill-suited to addressing a problem like climate change. Reason is, its worst effects won’t happen until everyone presently alive is dead, so there is very little self interest for anyone to address the problem today. And capitalism is all about the pursuit of self-interest.
To the contrary, what self interest there is lies in denying the existence of the problem and opposing any action intended to address it, as is illustrated by the actions of the Koch Brothers and others.