today is presentation about monopoly

today, my friends and I were learnt about monopoly.. Monopoly is a situation in which a single company owns all or nearly all of the market for a given type of product or service. This would happen in the case that there is a barrier to entry into the industry that allows the single company to operate without competition (for example, vast economies of scale, barriers to entry, or governmental regulation). In such an industry structure, the producer will often produce a volume that is less than the amount which would maximize social welfare.

the example of monopoly is Tenaga Nasional Berhad (TNB).. TNB is a single company which is the only supplier for electricity.. Monopoly do not have close subtitutes..