However, from the perspective of "okay, but what can I actually do?", it's still worthwhile to do things like going vegan, flying less, isolating your house, etc. And on top of that: vote for green parties (if you country has any). If there are no such parties in your country, then vote for whichever politicians are in favor of regulation of industrial pollution.
I'm not implying that you don't know this, just putting it to text in case anyone reads this and thinks "yeah indeed, why would I have to change anything if those companies don't?!".