No way. I mean, at "some point in the future" you never know what might be big. Strictly speaking nothing's impossible. You go back in time far enough and the highest selling book is X-Men, or Superman, or Captain Marvel (Shazam), or FF, or whatever, and there have been stretches of time when Batman didn't sell very well. So at "some point in the future" maybe Batman's run as the top hero ends and through some impossible-to-predict contrivance Nightwing has taken his place in the sales rankings.
But no, realistically speaking that's not gonna happen.
And a merry christmas to all of you. Or at least to those of you who celebrate the holiday. To the rest of you, same sentiment but applied to your particular traditions!