Yeah, if D&D survived 4E (an unfairly maligned edition, has flaws but isn't as bad as others say) AND Pathfinder at the same time, it's the Cloverfield monster in game form. It simply will not die.
The problem is really Hasbro, although the west coast liberal faggit influences in WotC certainly don't help. They don't understand the customer base or their own creative traits. This is a market that is willing to buy the product until the product fails to impress.
It's not about adding new classes, spells, weapons, etc. Those will make money but they also muddy the essence and strip it of its essential identity.
Make good adventures. Grow the campaign setting. Stop shitting on the founders and roots of the hobby-that's bringing in a lot of unnecessary negativity in order to commodify virtue and swindle a bunch of smooth brains into thinking that they are 'permitted' to buy the product. This cheap psychological ploy has only divided the fan base.
Let it be rebellious, anarchic, free and chaotic. And support that wild independent growth.
EDIT: Jim Ragge's Lamentations of the Flame Princess is, perhaps, too irrerverent and risque to ever be a contender for the crown but I love that the man never backs down off of his position to produce the best possible 'grindhouse' style, B movie fantasy content in printed form. His product line is wildly inconsistent in its themes (he published an EXCELLENT series of adventures based on the Salem Witch hunts (Disastrum) and also adventures called Don't Fuck the Priest and Wight Power). He is not afraid to ruffle feathers in service of making a product with a specific identity unique unto itself.
Now the Trump fagaloons are upset because he wore a shirt that said 'Trump is a cunt' on the back but as long as he doesn't become one of those 'always punch nazis' or 'if you are conservative, don't buy my books' cocksuckers, I will continue to support his products. He's been cancelled by 'his own side' so many times that it should be evident that he just wants to make a certain type of game and that he doesn't gatekeep audiences or creators no matter who they are. He lets us be whoever we want to be and we should give him the same leeway.
Hasbro can let WotC develop a product that is more mainstream without being fucking gay. Because gay, no matter how nice it may be, isn't mainstream. And anyway, for a game to be gay...isn't that the table's choice?