>But the industry and the jobs have shrunken a lot

And those people left jobless still have the right to vote. So you'll have to bribe them with welfare or invest in their upskilling otherwise they'll turn to crime to survive and vote the most extremist parties to power that will undo all your environmentalism.

It also leaves you economically and militarily vulnerable to the countries you outsourced all your manufacturing too, as you can't fight back an invading army with just your remaining HR and software departments.

>I'd pick the clean air and water, and have people poisoned far away that I don't know and can ignore.

Until they mass migrate as refugees out of their polluted hlleholes you helped create, and move into your clean country straining your resources, making it your problem once again. Or, they tool up and economically or militarily crush you, turning your country into one of their colonies.

You(the West) reap what you sow. There's no free lunch where you can have your cake and eat it too. In a highly globalized world, things tend to come back at you pretty quickly.