There's plenty of greenwashing in tech, but I don't think it's hopeless. On an ops call this morning I heard about a team switching to a server type that saves ~40% on power, and their fleet is ~50k instances. Opportunities exist if you have the skills and this is an issue you care about.
But the net effect is usually not less is it? Management will find a new way to spend that money or the team will realize they can now run 40% more instances on the same budget.
