Strong and enduring market demand is often about fundamental needs. Food, housing, and basic clothing (not fashion) are some of the known categories.
One of these strong and long lasting need was satisfied when the graphic user interface of PC’s replaced command line interface. People no longer had to study complicated computer language to use the devices. Demand has endured because people continuously look for easier methods to work less in offices.
In every situation where complex or disorganized procedure exists, opportunity for new devices, software, and services is present. Focusing on the root cause is more desirable than fixing only the immediate symptoms which may only meet short term requirements.