Economics is a discipline often introduced by focussing on scarcity, the scarcity of resources to satisfy human and animal wants, although the latter are usually ignored. An alternative approach is to focus on underutilized resources as illustrated by Uber and Airbnb. Both illustrate the absence of scarcity. Cars spend much of their lives parked and not providing transportation services, except as an option good for people to use when it suits them. Uber arose as owners decided that they could use their cars to make money when they were not needed to provide the owners transportation. The cars were underutilized resources and a way was found to make use of them. Scarcity was not the issue underutilization was.
The same could be argued for Airbnb where owners had space in their homes for others to use. Scarcity of living space could be reduced if not overcome in many societies if a process of sharing was organized. Bed and breakfast arrangements have been around for years and Airbnb is just a way of extending these hotel-like activities.
Anything which is a public good tends to be underutilized such as the text of a book, an empty park, road or beach. At home, wardrobes and chests of drawers hold clothing which is not being used. A surplus rather than scarcity is the issue because people want choice and are prepared to use their incomes to create options, but these require creating access to a surplus of clothing on hand.
Other examples illustrate not-scarcity, a surplus or underutilized resources include:
Cars being driven with no passengers, only the driver.
Truck owners try to avoid dead-heading by arranging full loads for their lorries travelling in both directions between two points.
Shops with unsold goods, especially when expensive and held for a long time. Annual sales are one way of disposing of surplus goods.
Buildings such as schools and universities which are only used for part of each day, and part of each year. Accommodation and lecture rooms are often hired out for other uses.
Empty warehouses and buildings of all kinds.
Trained workers unable to find paid work. OK, scarcity of jobs is the flip side to unemployment.
Underutilized resources occur with the sun in terms of both heat, light and energy as well as with wind, tides and waterfalls.
Recycling is a way of reducing scarcity by making more intensive use of resources.
This is not to suggest that scarcity is unimportant in examining economic issues, but to note that especially in high income societies, the issues are also often those of coping with underutilization not scarcity. If the focus is switched to developing countries, then there is obvious scarcity related to items like health, education, housing, safety, food, and water. And in developed countries examples of scarcity can be found. It just seems misleading to initiate the study of economics without noting that scarcity is not the only issue to address. Where scarcity is paramount is in the finite number of hours in the day, but these too can be underutilized.