After a while, these companies were integrated into large scale film companies such as Nikkatsu (merged into Daiei (films) during wartime), Shochiku, and Toho (the predecessor JO Studio closed in 1941).
やがて日活（戦時統合で大映(映画)）、松竹、東宝（前身のJ.Oスタヂオ。1941年閉鎖）など大映画会社の撮影所に集約されていった。