Ask an economic question: Is there a monopoly in technology?

What is monopoly? Monopoly means that one or several manufacturers exercise complete or certain control over the production or sales of a certain product. The fundamental reason of monopoly is the entry barrier, that is, the monopoly manufacturer can maintain its position as the only seller in the market because other enterprises can't enter the market and compete with it. So this obstacle can be?

Government policy: that is, the government creates monopoly, such as China's four major banks, two barrels of oil;

Resources: key resources are owned by the enterprise;

Technology and patents: the so-called natural monopoly, such as Microsoft;

The efficiency of solar energy is 30%, and mine is 90%. It is extremely technical and it is difficult to make a breakthrough. As long as they can get patents and it takes a long time for competitors to achieve 90% efficiency, then they can monopolize market production. Of course, the government will not conduct an anti-monopoly investigation on you.