So you'd never team up with Erik Mona, Monte Cook, Bruce Cordell, Heinsoo, Wyatt, Collins, etc. to make a super challenger to D&D?
It's like nobody wants to engage your Original Point.
I'll bite.
Each of those guys is a big shot. I think you'd have a problem of getting all their ideas and visions aligned and meshed into a cohesive, good product.
It's too easy for each of them to have the "one true vision" and spend too much time trying to get everybody else onboard their own idea train.
Now if we allow for the some room that these guys understand teamwork, and can bounce their ideas off and accept other ideas, I'm sure they could make a good RPG, given that each one of them can do so by themselves.
But will it be the one to topple the giant? I'm not so sure.
I think with some products, they hit this optimal resonance where it gets the majority share of the market, despite there being "better' products out there.
Without getting into bashing, consider the iPhone. it's another sweetspot product. Everybody knows what it is. Lots of people like it. People who don't, tend to own a clone product that has a better feature on it, justifying the purchase to them, but not really differentiating itself by taking the market lead in sales and mindspace.
Everybody who has a smartphone has an iPhone or a clone. If you test for name recognition of the clone's name, you'll get poor results. if you test for iPhone, everybody will know what it is.
D&D is like that. Whether gamers play it or like it, they all know what it is. Not everybody knows what PathFinder is.
There's a ton of factors that enable this effect. Including the name "Dungeons and Dragons".
if you can't get that name, you're product is stuck behind it, no matter how good it is.
At least until WotC totally hoses the product up, and I mean beyond whatever edition war hate people think is wrong with it now. I'm talking CareBears and Candyland rules crappiness beyond anything we've yet to see. Possibly FATAL-like.