A more fitting metaphor would be something like... If you had the ability to read all the books in the library extremely quickly, and to make useful mental connections between the information you read such that people would come to you for your vast knowledge, should you be allowed in the library?
https://www.copyright.gov/title37/201/37cfr201-14.html
§ 201.14 Warnings of copyright for use by certain libraries and archives.
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The copyright law of the United States (title 17, United States Code) governs the making of photocopies or other reproductions of copyrighted material.
Under certain conditions specified in the law, libraries and archives are authorized to furnish a photocopy or other reproduction. One of these specific conditions is that the photocopy or reproduction is not to be “used for any purpose other than private study, scholarship, or research.” If a user makes a request for, or later uses, a photocopy or reproduction for purposes in excess of “fair use,” that user may be liable for copyright infringement.
This institution reserves the right to refuse to accept a copying order if, in its judgment, fulfillment of the order would involve violation of copyright law.
It would be perfectly legal for me to go to the library and make photocopies of works. I could even take them home and use the photocopies as reference works write an essay and publish that. If {random person} took my photocopied pages and then sold them, that would likely go beyond the limits placed for how the photocopied works from the library may be used.