>Sounds like we need to focus on the much larger 80% of emissions first to me, as that's where the vast majority of the problem lies, by definition.

Alternatively... What if we do both in parallel? I'm also of the opinion that you can more likely change things in your own life than get a big corporation to change something, so you could make small gains within the next year as far as reducing personal impact, and still keep on fighting for the bigger problem to be solved at the same time.