The Art of War by Sun Tzu

II Waging War

4. Now, when your weapons are dulled, your ardor dampened, your strength exhausted and your treasure spent, other chieftains will spring up to take advantage of your extremity. Then no man however wise, will be able to avert the consequences that ensue.

Notes by Zephyrist:

Basically other people are watching how prepared you are for battle, if they sense weakness they will take advantage.

In business, the same happens, a company going through a rough time will often become the subject of a takeover bid.

Keep your strengths and reserves up and continue fighting.