Xiang Shan truly believed that additive manufacturing/3D printing could change the industrial pattern of humanity.
The inevitable path of human industrial patterns led toward "concentration," and monopolies could easily emerge. The reason for this was "mass production."
The benefits brought about by mass production were simply too great.
When human resources, capital, information, technology, and economic entities gathered in one area, they could create a "1+1>2" effect. As the scale of production institutions expanded, all production lines could share the technology provided by a single research and development institution, spreading out the cost of development. Large-scale purchasing of materials could also drive down prices.
In short, there were numerous benefits.
Of course, there was another point—having a large workforce allowed for specialization and division of labor, thus increasing efficiency and reducing costs as a result.