Japanese Publishers Launch New Manga Magazines in a Declining Market

From Daily Yomiuri Online comes an article titled "Firms launch New Manga in Shrinking Market," which looks at how Shueisha and Kadokawa Shoten are launching new manga magazines in a "declining magazine market":

While Japan's domestic comic magazine market is gradually shrinking, two major publishers have recently inaugurated monthly comic compilations--Shueisha Inc's Jump SQ. (Square) for boys and Kadokawa Shoten's Kerokero A (Ace) for children. Can they keep young readers from moving away from the magazines and find a foothold in the shrinking market?