17. For should the enemy strengthen his van, he will weaken his rear; should he strengthen his rear, he will weaken his van; should he strengthen his left, he will weaken his right; should he strengthen his right, he will weaken his left. If he sends reinforcements everywhere, he will everywhere be weak.

故備前則後寡備後則前寡備左則右寡備右則左寡無所不備則無所不寡

Sun Tzu

When an enemy focuses their efforts on reinforcing one part of their army, they will necessarily weaken another part of their army. This is because the resources and manpower needed to reinforce one part of the army cannot be used to reinforce another part at the same time. Therefore, if an enemy spreads their reinforcements evenly across their entire army, they will be weaker overall because they will not have enough resources to effectively reinforce any one part of their army.

If a business focuses on only one strategic area, it will be weaker in other areas. On the other hand, if the business tries to focus on all strategic areas at once, it will be weakened everywhere.

If a business focuses on only one strategic area, it means that it will put all of its resources and efforts into developing and improving that one area. This can lead to the business becoming very strong in that particular area, but it may also mean that it becomes weak in other areas. For example, if a business only focuses on developing new products, it may neglect other important areas such as marketing and customer service. As a result, the business may struggle to sell its products and retain customers, even if the products themselves are high-quality.

On the other hand, if a business tries to focus on all strategic areas at once, it may not be able to devote enough resources or attention to any one area. This can lead to the business being weak in all areas, rather than excelling in one. For example, if a business tries to develop new products, improve customer service, and expand its marketing efforts all at the same time, it may not be able to do any of these things effectively. The business may end up spreading itself too thin, and may not be able to achieve the desired results in any of the areas it is focusing on.

Overall, it is important for a business to find a balance between focusing on one strategic area and trying to improve in all areas at once. A business may be able to achieve success by focusing on one area and then expanding to others once it has established a strong foundation. This can help the business to avoid becoming weak in any one area, while still allowing it to grow and improve over time.