What is the pattern between low order medium order and high order services?

Low order services are typically essential and widely used, such as grocery stores or basic healthcare, while medium order services offer more specialized options, like specialty shops or clinics. High order services are less frequently utilized and often require significant consumer investment, such as luxury hotels or fine dining. The pattern reflects a hierarchy of consumer demand and service complexity, with low order services being more accessible and high order services providing unique experiences or specialized care.