I was (and still am) on the fence with this one.
The type of on-topic question this falls most closely under is
Behind-the-scenes and fandom information
In my case, I voted based on my interpretation of your question and what the help center means by "behind the scenes". I interpreted your question as one of "why did the movie studio reboot a film in just a few years?". As the VTC comment indicates, this is a business-based question (or "financial", in your words) which for most movies doesn't have anything to do with sci fi/fantasy. The accepted answer indicates that the film was rebooted not for a sci fi/fantasy reason but because it used
a new director and an all new cast
The community seems to be divided on the help center's meaning of the "behind-the-scenes". For one, five distinct users voted to close your question and five distinct users voted to re-open it. As far as meta goes, there is an old meta question asking about the meaning of "behind the scenes" which seems to support just about any "behind the scenes" question. On the other hand, there is a more recent meta question about studios' decisions which suggests that some "behind the scenes" questions aren't on-topic. In particular, the accepted answer by @SQB says that
questions about how much money went where should be off topic
So financial "behind the scenes" questions -- like yours -- aren't necessarily on topic. At the time of this post, both meta answers have the same score.
I think your question is too much like the financial "behind the scenes" type of the question which the recent meta answer says is off-topic. Furthermore, I think this question would be a better fit for Movies & TV (yes, I know that a question can be asked on any SE site for which it is on topic, even if it is on-topic on multiple sites and was asked on a less relevant one). However, I acknowledge that reasonable arguments can be made on both sides.