They hire only the best outside business help, too - accountants, attorneys, consultants and ad agencies. Not necessarily the highest priced - just the best. They seek out recommendations about who's best from other smart people. Nothing Ever Happens On Schedule. Customers pay slower than you anticipate.
Employees take unexpected sick days.
Your bank loan application is delayed because three members of the loan committee are off snorkeling in Tahiti. Priority Mail becomes Low Priority Mail and takes two weeks to travel across three states. The new software doesn't work and a replacement won't arrive for weeks. The best businesses temper their plans and commitments based on the reality that things don't go as they should. If you think it will be done Thursday, better promise your customer next Tuesday.