Folks are a cost, and to hire folks you don't just need money: you need to be a charismatic person with management skills.In general comparing VNs to $50 videogames is never going to work, the closest one might get to it is by looking at some indie games on Itch.io (or what used to be Desura), but if you ever followed them you'd know how long those would take to develop.
Any other and faster development process requires more folks, and folks are a cost.
You need to be willing to delegate, and thus to accept that nobody in the world is going to do something in the exact same way you would have done it.
Let's say that DPC has many other qualities...