You're saying "it's massive" and, in, like absolute terms, sure, it is; everything we do is massive, we're a huge country. But in relative terms? No. It's not massive. It's a small fraction of our total costs. The total benefits we can reap from minimizing it? Not that great. Ambitious plans based on minimizing those costs? You should be skeptical. You should be asking: how are we going to solve this huge problem by zeroing in on such a small fraction of the total problem? Maybe the answer will surprise you, but you should start by needing to be surprised by the answer.