It's rare he has to, mind, but Brianna's the sort who was content to flush roughly 700,000 bux down the toilet between Socially Unconscious and Giant Spacekat Studios, and, as such, Frank knows how to keep Brianna on a proverbial leash.
You know, when you put it like that it reminds me a lot of Citizen Kane.
Charles, at some point in the movie, bumps into a girl named Susan who happens to be an aspiring singer and starts meeting her despite being married. Eventually, this liaison to the "singer" (as she is referred to in the newspapers, quotation marks included) is made public and Charles suffers a terrible decline in popularity
Later on, he builds an opera house for Susan (whom he married), forcing her to perform there in a large show and it's implied that he mainly did this to get rid of the quotation marks (ie: making a real singer out of her).
It's like Franks wants to get rid of the quotation marks in "game dev", too.
I'm assuming Frank will insist on recouping his investment before Wu makes any profit from it.

At this point, They'd have to sell like a hundred thousand copies, I assume - and I'd be genuinely amazed if they even managed to break into the quadruple digits with their sales. Don't know how much Steam takes away from them per sale, but the mere thought of Frank recouping even a fraction of his money is totally unrealistic.
Monetary gain hasn't been a motivation for these two chucklefucks for the longest period, otherwise they'd closed down their little vanity studio ages ago. I don't know how much Amanda made in her GSX days, but she was employed for years, it seems, along a bunch of other people (who have been fired some time ago), so I guess the Wus managed to sink a shitton of money into that turd.