Shirobako production committee (in order of financing):
Warner Entertainment Japan, PA Works, Showgate, Klockworx, Soutsu, Movic, Dokomo, BS Fuji
Primary ways to recoup expenses:
Video discs (retail)/CDs (Warner)
Merch from PA Works directly/anything else (PA Works)
International Streaming/international release (Showgate)
Video discs (rental) (Klockworx)
Ratings/buying anything (Sotsu)
Merchandise (Movic)
Japanese Streaming (Docomo)
Watching on BS Fuji (BS Fuji)
I bold video discs as not only was Warner the highest financier of the show, their producer helped bring the committee together alongside producer Nakatani (who produces all PA originals).
Each committee is different and so each way they recoup finances is different. These methods may not apply to each production as their goals are different, so don't apply these for any other show.