Mind sharing which game this is? I'd simply be curious to see what sort of/quality of game generates that sort of (as you said, very favorable) income characteristics in this current market.
I'm sorry, but that sounds like a bit of a cop out. One would hope that an idea with the traction to be successful in the way you're describing would be hard enough to replicate to merit that value, or stand alone in such a way that if someone replicated it it would be VERY obvious and difficult for the clones. Perhaps I'm being exceedingly naive to the aggressively cutthroat world of mobile game development, but "competition" seems like a very unsatisfying reason to not want to communicate a shared understanding of what people want in tech at this point in time.
Competition is not an actor. It is a process, of which you're part; whether you want it to be this way, or would prefer a different market to the one we have.
Embrace the competition. Plan for it. Set time aside for it. Make it work for you.