In terms of enterprise management, why can Song Jiang replace Classical as the boss of Liangshan?

After Song Jiang came to Liangshan, he was elected as the second master by others. Later, every time Liangshan went to war, Song Jiangdu stopped the pace of classical war on the grounds that "my brother is the master of the cottage, so we should not make a rash move". Song Jiang blocked the classical war, ostensibly to protect it, but actually to weaken its power. When Song Jiangling led the troops to fight outside, he established prestige among some ordinary soldiers and generals.

Later, Classical couldn't stand Song Jiang's thoughtfulness any longer. Regardless of Sung River's obstruction, he led troops to attack Zengtou City. However, classicism is not good. When attacking Zengtou City, he was injured by a poisonous arrow and finally died. Before he died, Chao Gai left his last words: "Whoever wants to capture Shi Wengong who shot himself alive is the boss of Liangshan". Later, Lu Junyi, the helper invited by Song Jiang, captured Shi Wengong alive, but the clever Lu Junyi didn't want to be the boss, so he pushed away Song Jiang's kindness.