That is not totally wrong. It could be like what happened to the Golden Compass. After The Chronicles of Narnia became so successful from evangelical douchebags, the studios thought another fantasy film whose animation budget is loaded would be successful.
Eh wrong. Even with pseudo-bear calvary the movie was complete shit. Not to mention the fact a book that "kills god" won't garner you the same audience as Chronicles of Aslan who is Jesus But Really a Lion Who Can Rez Himself.
So if DBZ movie does well they might throw more money at this. And if it doesn't they might reel in live action adaptations of manga/anime. Though I would say Speed Racer is the movie to watch if this shit can be successful. I think it does but can't say till movie comes out for sure.