From the perspective of history, there are somethings that essential to human community life. We could refer it as the "basis of life" in human world although the world has changed a lot. In mandarin, we summarize it into 4 words 衣(clothing)食(Food/drink)住(living place/ property/convenience goods/land/ )行(transportation/ petroleum/banking services).
Any kind of human society needs those things and they are all consumable. Each time people use up the resources, businessmen have to manufacture and sell the products and services. People's desire to consume is hardly avoided and scarcity always happens.
In stock market, there are a lot of services companies which seems like profitable and demanded. Unfortunately, what we can see is that the "basis of life" companies are always the winners in the market and some of the companies manage to survive more than 1 century.
Basis demand would not change easily. As long as those companies exist, there is no reason for people not demanding the products or services.
Needless to say, I have started researching about this kind of companies. They are all great companies where they have been here for a long time and maintaining low profile style. The possible researched companies : Oriented Food, Ajinomoto, Hup Seng, PPB, Padnini, Berjaya food, Parkson, NTPM, and Muda.
