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Yes. Though currently a small part of the new economy, biotechnology could be a major industry in the near future, thanks to continuing technological breakthroughs.
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In this case, the AC curve is identical with the AFC curve, and average cost falls whenever output is increased.
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No. Because customized methods reduce the importance of increasing returns to scale, businesses do not need to be as large to gain the competitive advantage that comes with low long-run average costs.