Because it's a NBC show and not an actual police operation. Given Dateline's history of distorting facts, fear the day when the MSM can run a sting and arrest people. For now, the MSM must settle with only being able to humiliate folks on TV.
That said, I want to see these pervs put away too. That they prey on our children is beyond criminal...it's evil. There are police-run stings like this that do produce results. I hope to someday be on a jury that has a case like this.
Hey Joe Friday would have arrested them and we would have heard the disposition of the cases by program end. That was real wan't it? Wasn't it?
But, if you read the article, this group who engage in this type of baiting operation and involve the Police say that there are relatively few charges despite the large number of pervs lured out in the open.
I guess they wait until a child is ruined or worse before they feel the need to take action.