Nobody tells ten people anymore.
Well, the latter seems dead since more businesses are taking no heed of it. The exponentially growing PC market is a tragic example. When I was in computer sales not too long ago, it was an absolute sin to let a customer leave our business unsatisfied. We operated on that forgotten principle that says that the customer is always right. What it means is that, within reason, you do whatever is necessary to save the company's reputation in the market.