They don't know. Even if there is someone that does, WB's biggest problem is that they have too many cooks in the kitchen. After the resurgence in the early 00s with movies like Blade, X-Men and Spider-Man (notice all three are Marvel?) WB caught on that comic book movies were profitable again (the last comic book movies WB had made were Steel and Batman & Robin), so they just gave out all the DC/Vertigo properties to their different associated production companies to get as many in production as possible. This is what lead to the releases of different movies like Catwoman, Batman Begins, Constantine, V For Vendetta and Superman Returns in 05/06 as well as sleeper hit 300 (not a DC property but still based on a comic book).
The only true successes were Batman Begins and 300, which is how Nolan and Snyder got the clout to do their next movies on their own terms (The Dark Knight and Watchmen), but with Avengers showing the next level of how much money could really be made, WB started looking into launching their own DCU after long time production on Justice League: Mortal had been cancelled. They tried to go for it with Green Lantern while their other production companies were still churning out unrelated shyt like The Losers and Jonah Hex. Since WB had no idea about how to handle a plan of this magniute, they promoted Geoff Johns to oversee the DCU creatively (in particular because he revived the Green Lantern comic book in the years before), but rumors suggested a lot of the big producers scoffed at some "comic book writer" handling multi-million dollar movies, so Johns never really got the clout like Kevin Feige had over at Marvel, everybody had their own ideas of what Green Lantern should be and then of course it flopped both critically and financially.
WB still had The Dark Knight Rises coming out and thus decided the DCU would be "officially" started after that release with 2013's Man Of Steel, appointing Zack Snyder (who had both financial success and fanbase praise because of 300 and Watchmen) and David Goyer (co-writer of the whole TDK trilogy) to become the new overseers as WB had started to retrieve all the properties they had handed out to production partners (a notable exception is Shazam, which is still partly in hands of New Line Cinema who have been very outspoken about the direction of Shazam being the one that both DC and they agree on). All the other DC movies will be produced under Ratpac Entertainment (WB's biggest production partner after Legendary Pictures departed to Universal).
So now we're here and although WB has managed to gather all their DC properties under one umbrella, it still isn't clear who's holding the umbrella. Goyer's pretty much out creatively (will stay on as a producer), Snyder's role as creative supervisor is on thin ice and Geoff Johns' role is still that of a glorified advisor, while their choices of directors (Ayer on Suicide Squad, Affleck on Batman, Wan on Aquaman and Lord & Miller on Flash) fall in the line of WB-guys the studio supports because of previous successes, which suggest the studio still doesn't know what it wants and is just betting on their in-house talent to get it right for them.
