While you’re not wrong about how humanity isn’t serious about cutting energy use, the lights in taller buildings like I assume these were could equate to much much less energy used when opposed to one or two story buildings surrounded by parking lots that require employees to drive to them.
Meanwhile my college professor was the author of the textbook and workbook that were required materials for the class conveniently sold at ridiculous prices in the college book store and could only be used once due to needing to tear out pages to turn in.