Companies outsourcing their pollution or being out-competed by foreign companies that do pollute has to stop.
So, then let's say it took China 40 years to industrialize, from 1960 to 2000. So if things move twice as fast these days, China should be advanced enough to start transitioning to a clean industry by 2065.
What's par? Many countries in China's income quantile have environmental problems. China happens to be especially large, and India especially environmentalist, so they stick out like a billion sore thumbs.
Move just a little down the list and Indonesia and Brazil have both been all over the news for environmental destruction, while in Mexico, Pakistan and Nigeria, environmental issues are overshadowed by simmering civil wars.
If western countries want to stop developing countries from using their own resources, some financial compensation should be involved.
http://happyplanetindex.org/countries
India has a decent HPI. It's one of the few metrics that seems to avoid correlation with GDP without simply stratifying.
China performs poorly, compared to par/GDP here, similarly to India. Brazil meanwhile ranks better.