The passage explains that market researchers typically survey the managers of companies developing new technologies to identify potential market-transforming technologies. However, it points out that the managers, due to their vested interest in the success of the technology, often overstate its potential. Surprisingly, the potential buyers of the technology, who ultimately determine its commercial success, are not typically surveyed. We need to find the option that best explains this typical survey practice. Let's evaluate each choice:
(A) If a new technology succeeds, the commercial benefits accrue largely to the producers, not to the buyers, of that technology.
This option doesn't explain why market researchers primarily survey the managers of companies developing new technologies and not the potential buyers. It discusses the commercial benefits but doesn't provide a reason for the survey practices.
(B) People who promote the virtues of a new technology typically fail to consider that the old technology that is currently in use continues to be improved, often substantially.
This option is irrelevant to the explanation for the survey practices of market researchers. It discusses the failure of technology promoters to consider improvements in old technology but doesn't provide insights into why potential buyers are not surveyed.
(C) Investors are unlikely to invest substantial amounts of capital in a company whose own managers are skeptical about the commercial prospects of a new technology they are developing.
This option doesn't directly explain the survey practices of market researchers. While it mentions investors' likelihood to invest based on managers' skepticism, it doesn't address the omission of surveying potential buyers.
(D) The potential buyers for not-yet-available technologies can seldom be reliably identified.
This option provides a potential explanation for the survey practices. If potential buyers for not-yet-available technologies cannot be reliably identified, it would make sense for market researchers to focus their surveys on the managers developing the technologies instead.
(E) The developers of a new technology are generally no better positioned than its potential buyers to gauge how rapidly the new technology can be efficiently mass-produced.
This option is irrelevant to the explanation for the survey practices. It compares the ability of developers and potential buyers to gauge the efficient mass production of a technology but doesn't provide insights into why market researchers primarily survey developers and not potential buyers.
Based on the analysis, the option that best accounts for the typical survey practices among market researchers is (D) – "The potential buyers for not-yet-available technologies can seldom be reliably identified." This explains why market researchers primarily survey the managers of companies developing new technologies instead of potential buyers, as the potential buyers for technologies that are not yet available are difficult to reliably identify.