My understanding is that most of the work for SFV, and the ongoing development support, was and is being handled by Capcom. Ono said in an interview that they need to do it that way to meet the deadlines for upcoming features and DLC characters. I wish I had the interview link saved so I could post it (I'd like to read it again myself).
Well, you can check the credits here:
http://www.mobygames.com/game/windows/street-fighter-v/credits