“To be near the goal while the enemy is still far, to wait at ease while the enemy is toiling: this is the art of husbanding one's strength.”

Force the rival to spend while you conserve; proximity and rest are weapons of attrition.
Chapter 7 defines economy of force as a position, not a virtue: to be near the goal while the enemy is still far, to wait at ease while the enemy is toiling — this is the art of husbanding one’s strength. The image is spatial before it is moral: distance and rest are advantages you can occupy. Sun Tzu’s general does not out-endure the opponent so much as arrange to never need endurance.
Two firms court the same acquirer. One flies monthly to headquarters, builds custom decks for every meeting, orbits the deal — toiling, always far. The other spends a quarter getting one operational integration running as a pilot, then invites the acquirer to see it working. When the deal meeting finally happens, one side presents effort and the other presents proximity. The pilot was the nearness; the decks were the distance.
Husbanding strength is not laziness dressed in strategy — the pilot took more real work than the flying. The verse distinguishes expenditure that compounds toward the goal from expenditure that merely performs engagement. The misreading conserves everything and arrives nowhere; Sun Tzu’s conservation serves a position, and positions require building.