Whether its entirely cash shop development or game development is something that varies more heavily from business to business I'll give you that. Bioware policy on it from ME3 has been a combination of development of market product and content though, so I think that at least some resources being devoted to content development is likely. This really depends on what their financial analysis team tells them.
You don't have to give me anything, that's how it is.
But yes if they do get any extra development money it is much more likely to go into something with a very low cost and very high profit margin like Cashshop gambling boxes than it is into something with a very high cost and very low direct profit margain like a new OP or WZ or more class story.