The problem with copycat churches

II Samuel 5: 17When the Philistines heard that David had been anointed king over Israel, they went up in full force to search for him, but David heard about it and went down to the stronghold. 18 Now the Philistines had come and spread out in the Valley of Rephaim; 19 so David inquired of the LORD, "Shall I go and attack the Philistines? Will you hand them over to me?"
The LORD answered him, "Go, for I will surely hand the Philistines over to you."

20 So David went to Baal Perazim, and there he defeated them. He said, "As waters break out, the LORD has broken out against my enemies before me." So that place was called Baal Perazim. 21 The Philistines abandoned their idols there, and David and his men carried them off.

22 Once more the Philistines came up and spread out in the Valley of Rephaim; 23 so David inquired of the LORD, and he answered, "Do not go straight up, but circle around behind them and attack them in front of the balsam trees. 24 As soon as you hear the sound of marching in the tops of the balsam trees, move quickly, because that will mean the LORD has gone out in front of you to strike the Philistine army." 25 So David did as the LORD commanded him, and he struck down the Philistines all the way from Gibeon to Gezer (quote from the New International Version, Zondervan Press)

The Philistines went out twice to test the mettle of the new king of Israel, and David listened each time to God, despite the identical circumstances of the attack. Too many times churches and their leaders may listen the first time, but recognizing a circumstance, they repeat the solutions without consulting God. Why do churches insist on following formulas? Wolfgang Simpson writes in Houses that Change the World that 85% of churches copy the style and formulas of churches that exist. Yet 80% of church plants fail.

Where did this pattern of copycatting come from. After all:

• How many times did Israel use 300 soldiers with pots, torches, and trumpets to defeat an army like God did through Gideon? Once
  
• How many times did Israel march around a city for seven days and blow some horns to make walls fall, like Jericho? Once.
  

Where does the McChurch philosophy come from?

I'd like to know. It seems that it cuts off the glory of God. A reading of the Bible rarely shows God repeating a battle tactic, a way of healing, etc. The glory of God, as Iranaeus wrote, is man come fully alive. Letting the creativity of each group of God's people come out, under the guidance of the Holy Spirit, seems to be more glorifying of God that the McChurch franchising that goes on.