I've never been to Indonesia, but I was aware of this problem from a birder friend who has visited - apparently similar problems in Vietnam with the popularity of cage birds?
While it is appalling that it is having such a devastating effect on bird populations, there is surely hope that a society which is so interested in birds can change for the better, with (as others have suggested) the right sort of publicity from key influencers. Probably my own interest in birds as a young child was influenced by having a pet budgerigar, and I remember visiting cage bird shows in Newcastle long before I got into birding and discovered how much more rewarding it was to discover wild birds. I'd perhaps give Indonesia more chance of turning into a nation of birders than those societies who see them primarily as a hunting target - you've just got to hope that by the time that happens they still have something to watch.