Huh. I live in South Korea, and local Android app market is "fragmented", but approximately nobody complains, both users and developers. Local app market (owned by consortium of local mobile companies and local portals) takes less fee from developers, so developers love it. To let users use it, app developers do special promotion for the local app market, such as discount for in app purchases and special items for games, so users also love it. It is great.
