Purchasing only what's affordable today can keep your company from falling into the trap of expanding faster than your management capabilities. It necessitates prioritizing clients and assignments. By forcing you to focus on growth that's affordable, it helps assure that you will expand in an orderly, sustainable, profitable way. Second, using cash keeps you from overbuying. Individuals who purchase with cash are more likely to make considered decisions and less likely to make emotional ones.
Studies show that purchases nearly double when credit or leasing is used instead of cash.
Third, using cash makes you less vulnerable to business downturns. If business should take a downturn, your fixed obligations can be a major problem. And with leases you will probably be obligated for its full term, regardless of your later need or ability to pay. In fact, you can't sell it. Even worse, your valuable employees could go to work for a more financially conservative competitor.