Someone who is frustrated - and whose frustration could be eliminated by an appropriate product or service - represents a revenue opportunity. That kind of frustration is a positive thing. The bigger the frustration, the bigger the opportunity.
However, on the other hand, if you're running a business, you can't afford to have any frustration inside your company walls. Companies with a lot of internal frustration do not do as well as the companies with little or none. That's just a fact.