One thing I'm pretty certain of is that no matter how good XDMS becomes, it will simply not be the commercial success that Taiko aspires to unless it offers the user flexibility that Roon is famous for implementing. There's a big difference in commercial potential by offering a program that provides superior sonic performance for a few hundred users, vs one that is used as a de facto standard by tens of thousands+ of users. Taiko knows this as well, and it makes perfect to sense that the solutions Emile is offering will benefit both player programs. A rising tide lifts all boats. The fact that Emile's approach is not putting a gun to anyone's head to use one or the other, since you will be able to use either, is yet another example of his forward thinking.
I am not sure how you compare the commercial success of XDMS to Roon. I don’t believe Taiko plans to offer XDMS to non-Extreme (or future Taiko server) owners. Correct me if I am wrong on this. My understanding is that XDMS is being developed so that Taiko has complete control of the end to end process and doesn’t have to rely on another company to provide the software.
I guess my point is that the goal of XDMS is not to compete with Roon but to make the Extreme as good as possible.