Phizzy - "...if they would only get things up and running they could save future potential victims from being such."
If I had to guess, I'd say that they've drawn a line in the sand about the WT's child abuse policies for two main reasons (I'm sure there are others)...
A) they're firmly convinced that - regardless of the evidence - their application of the two-witness rule should be sufficient (because if it's not, then what other WT policies are insufficient?)...
...and...
B) there has been compelling anecdotal evidence that they have a hyper-charged knee-jerk aversion to making changes - or, perhaps more importantly, being seen making changes - as a direct result of pressure from "Satan's World".
Remember, since Rutherford's day, one of the WTS's defining characteristics is its extreme conservatism, and despite what some may think, this aspect has not abated in the slightest.
Back in the day, the Witness community was considerably more (self-) isolated from the rest of the world, and that world changed much more slowly back then (relatively speaking); because of that, policy adjustments made as a result of outside pressures could be implemented at a conservative rate and spun in such a manner that the rank-and-file could absorb them without freaking the f**k out.
The modern age's high-speed rate of evolution today, however, simply doesn't allow for that.