- cracking down dissidents (no election - no real 'authority', officials don't have any incentives to listen to "the people"^TM)
- handling local politics (again, no election - same PRC ppl)
- deporting N.Korean refugees back to N.Korea (continuing just because Chinas has been doing so - just like PRC praising Mao for Cultural Revolution that killed millions)
without elections, why would a gov. official listen to "the people"?
and speaking of dissidents, why would Chinese police operate "execution vans"? isn't that to hide execution of key people, whose news of execution may stir the public?
If the effect of this pollution is that China's competitors have to spend more energy and resources combatting the ozone hole then it's a competitive advantage with the only downside being loss of international reputation.
Point is, the pollution China's been cracking down on is the type that hurts the country economically (whether through immediate health issues or making it less desirable to live). Will be interesting to see how they respond.
While this report may be the first smoking gun, there have been very, very strong implications of cheating in China on CFCs for years. If they wanted to rein it in, they could have done it long ago.