Having an understanding of who the adversary is and how it might exploit weaknesses and security vulnerabilities will make any organization better prepared.
Rather than just reacting to a security event, organizations should implement a new posture, one based on the red team mindset: be proactive, think what an attacker can exploit, and stay two or three moves ahead of him. Prepare and establish detection and deception measures. Make a future attack harder.
If one has enough visibility into what an adversary might do, their TTPs (tactics techniques and procedures) and motives, a much better overall security defense posture can be set, a better plan with various degrees of contingencies can be prepared and when a new challenge presents itself, the whole organization is better suited to deal with it.