The creator of this bootleg likely used the name to trick search algorithms. By appending "-2007-" and "Volume III" to "Mothership," it appeared to be a continuation of the official, legal product. This is a classic "dark pattern" of early music piracy: hijacking a legitimate product's SEO to sell or distribute a low-quality bootleg.
A third volume would have been a logical commercial move—but Jimmy Page, known for his meticulous control of the band’s catalog, chose to keep Mothership as a single, cohesive greatest-hits package. He argued that 24 tracks represented “the complete essence of Led Zeppelin.” Led Zeppelin Mothership. Volume III -2007-.rar