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 not transformative, or Defendants may have been able to achieve their transformative goals with less than complete reproduction of unadopted model code text. As with the second fair use factor, this factor does not carry dispositive weight in isolation.
 * 4. Fourth Factor: Effect of Use upon Market

The fourth fair use factor is “the effect of the use upon the potential market for or value of the copyrighted work.” 17 U.S.C. § 107(4). This factor “requires courts to consider not only the extent of market harm caused by the particular actions of the alleged infringer, but also whether unrestricted and widespread conduct of the sort engaged in by the defendant … would result in a substantially adverse impact on the potential market for the original.” Campbell, 510 U.S. at 590 (internal quotation marks omitted). This analysis must also account for the market for derivative works. Id. “The Factor Four analysis is concerned with only one type of economic injury to a copyright holder: the harm that results because the secondary use serves as a substitute for the original work.” HathiTrust, 755 F.3d at 99; see also  Castle Rock , 150 F.3d at 145 (“In considering the fourth factor, our concern is not whether the secondary use suppresses or even