It was government incompetence that lead to the seige and it was government incompetence that ended it so badly.
The government did successfully put a stop to the alleged molestation by incinerating the children.
It wasn't just about apprehending and questioning Koresh. It was about - and the search warrant was obtained for searching the compound. The authorities needed to gain access to the compound, and a federal judge agreed. Why is that so difficult to understand?