Because of the world wide reporting that takes place on this forum and our lack of fear to reveal unpleasant truths, we are seeing the whole scope of what's going on, whereas individual JW's tend to see the sale of the Kingdom Hall they attend, as is an isolated incident.
I think if they reversed the shunning policy or changed their stance on blood, it would be the final straw or the tipping point for a lot of long time JW's in terms of waking up to the fact that the whole thing is a made up hoax.