Some of Chanakya's philosophy can be adopted while preparing Business Strategy.
If your Competitor is strong, then enter into a joint venture/collaborate with him. This will ensure that he becomes a stakeholder in your business apart from giving you an opportunity to study his business practices closely.
If the Competition is weak, do not associate in any way. It will end up in a lose-win situation.
Chanakya says unheated metals do not join together. This is applicable in the case of Mergers & Acquisitions. A proper climate has to be created (akin to heating the metal) in both the organizations prior to commencing the M&A talks.
Attack your competition only when you are sure they cannot retaliate and that they are weak. And never ever fight with someone equal to you, because when equals fight, both will perish.