The story
According to Kenzie LaMar, lead character artist of Silent Hill: Homecoming, Team Silent was ultimately disbanded by Konami itself, because Konami wanted other developers to make the games and wanted the games to be different. Later titles were developed by Western companies, such as Climax Studios, Double Helix Games and Vatra Games.
From Wikipedia’s article on Team Silent, shared under CC BY-SA 4.0.3