While you are correct in that they have a high level of control over industry I think you are entirely incorrect that they wield that irresponsible. In no way am I suggestion they are particularly concerned about the carbon footprint they overall create but they are extremely concerned but the profit they make. As such industry is highly motivated to be the most efficient they can. And the more efficient you are, typically the less energy you will consume per cog built.

Ultimately it is up to us alone if we want to consume that 'cog' and the carbon footprint it represents.