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| | Returns to scale - Wikipedia, the free encyclopedia |
 | | When combined, economies of scale and diseconomies of scale lead to ideal firm size theory, which states that per-unit costs decrease until they reach a certain minimum, then increase as the firm size increases further. |
 | | Economies of scale tend to occur in industries with high capital costs in which those costs can be distributed across a large number of units of production (both in absolute terms, and, especially, relative to the size of the market).A common example is a factory. |
 | | Network externalities resemble economies of scale, but they are not considered such because they are a function of the number of users of a good or service in an industry, not of the production efficiency within a business. |
| en.wikipedia.org /wiki/Economies_of_scale (800 words) |
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