The Comic Market was dominated by women from the beginning (90 percent of its first participants were female), but in 1981, thanks to lolicon, male participants numbered the same as female participants for the first time in Comike’s history. With almost ten thousand participants, Comic Market was now Japan’s biggest dōjinshi event and the center of dōjinshi culture. It grew big enough that the nineteenth Comic Market, in the winter of 1981, was held in the International Exhibition Center in Harumi. A year later, a convention catalogue was sold for the first time, both to help visitors to find their favorite circles in the crowd of almost a thousand circles and to help finance Comic Market’s expansion. Comike also encouraged the many fan-related companies to include advertisements in the catalog.
Internal conflicts on the Comike planning committee underlay some of these developments: they marked the ascendancy of the faction led by Yonezawa Yoshihiro, who favored Comike’s unlimited expansion. Though he was criticized for purportedly selling dōjinshi out to commercialism, Yonezawa couched his plans for Comike in terms of a collective organization of the convention by all participants, including staff, circles, and visitors. Whatever the underlying reality, these public principles remain little changed today.
[QUOTE] From Fan-Yi Lam, Comic Market: How the World’s Biggest Amateur Comic Fair Shaped Japanese Dōjinshi Culture