釜底抽薪
Stratagems of Contending · 混战计Undermine the enemy's source of strength. Instead of confronting the problem directly, eliminate what sustains it.
Rather than fighting Cao Cao's massive army directly, Zhou Yu attacked their supply lines and spread disease among their northern troops unfamiliar with southern waters. By eliminating the foundation of Cao Cao's power, the coalition neutralized the threat.
Netflix didn't compete with Blockbuster's stores (the fire). It eliminated the need for physical stores (the firewood) through DVD-by-mail and then streaming. Blockbuster's greatest asset became its greatest liability.
When Apple sued Samsung over smartphone patents, the strategy wasn't to win damages — it was to "remove the firewood" by threatening Samsung's supply chain with injunctions. The real target was Samsung's ability to ship products, not the patent fees.