Look, I can only show you the door, you're the one that has to walk through it, if you refuse to do so then so be it.
Right man! Exactly right!!
It has been developed, otherwise I wouldn't say it! Remember Madara's flashback as Obito is holding Rin, "a world with only winners"? Obito says this right after:"I will create a world where you are alive". It is heavily implied my friend.
there's a huge difference between implied and developed.