The pirated version of manga brings two effects of "decrease in sales of latest works" and "promotion of sales of old works"

ByWill

Various pirated versions are circulating around the world, such as movies, TV programs, music, books, etc., affecting the regular edition. Sometimes it is said that "pirated edition has advertising effect", but when I investigated whether it applies to books, it turned out that sales tend to grow in the old work indeed.

Impact on Book Pirated Sales: Case of Japanese Manga as Case | Keio University Institute of Economic Research
https://ies.keio.ac.jp/publications/7121/


Online Piracy Can Boost Comic Book Sales, Research Finds - TorrentFreak
https://torrentfreak.com/online-piracy-can-boost-comic-book-sales-research-finds/

Mr. Tatsuo Tanaka of the Keio University Economic Research Institute did the research. Investigate how much "pirated" is being "spread" in each piece of work and investigate the influence on the sales of the regular version, and also to delete the pirated file jointly performed by the publisher as a natural experimentDifference differenceWe also tried to analyze by.

There are two types of "pirated sites": those called "reach sites" that gather links to pirated files, and "cyber locker sites" where pirated files are placed. The industry also plagues the pirated version of manga and animation, and since 2014 led the general content corporation overseas distribution promotion organization (CODA)Started "Manga-Anime Guardians Project" (MAGP) to guide from pirated version to regular versionI am making it. In MAGP it is mainly aimed at closing the cyber locker site, but in this survey, it is thought that the user mainly uses the reach site when looking for the pirated file, so the reach site It is subject to survey.

Works covered by the research are 332 works of Shueisha, Kodansha, Shogakkan, Kadokawa, which Magpy's priority deletion targets, and 162 works not included in the target. Since 70% of these were digitized, books and e-book versions were compiled separately, so the combined work of the experimental group and the control group totaled 840 works.

From each of the works, I extracted 4 volumes of "1 volume", "intermediate volume (5 volumes if 10 vol. Configuration)", "2 most recent volume (9 volumes / 10 volumes for 10 volumes)" as data samples , The amount of data goes up to 3360 volumes.

And 239 of the target works were completed by 2014, and serialization was continued at the time of investigation of 601 works.

The result of this survey was that "pirated copies of serialized works will reduce the sales of regular versions" and "pirated copies of the series that completed the series promote the sales of the regular edition".

It is thought that the sales effect of the serial version ends with the sales growth of the regular version was the effect of advertising reminiscent of the work that was forgotten.

In this way, since the effect brought by the pirated version is inhomogeneous, we conclude that the best solution is not to "close pirate sites" but "to delete pirated copies of serial works".

The same thing happens even in the music world, and in 2007 the paper by Sudip Bhattacharjee et al.The Effect of Digital Sharing Technologies on Music Markets: A Survival Analysis of Albums on Ranking ChartsAlthough file sharing caused a drop in CD sales of famous artists, it has been reported that CD sales of anonymous artists have increased.

Deletion of the pirated version is so widespread that YouTube, orManga Library ZIt would be nice if there was a system such that right holders could appropriately earn revenue like ......