Back when Andrei Alexandrescu was working at Facebook, I had hoped that Facebook would adopt D as a standard language. That didn't happen, and it seems unlikely that D will get a powerful corporate sponsor. I think that would have greatly helped D not just in terms of resources, but also in terms of popularity.
In an ideal world, good programming languages would win or lose on their own merits, but that doesn't seem to be the case in the world we actually live in.
At least Facebook is currently heavily investing in Haskell (using it for some core infrastructure, and having hired some core GHC contributors).
MSFT is also contributing to Haskell by supporting Haskell-related research, and employing Simon Peyton Jones.
Jane Street Capital is also heavily investing in OCaml.
While these languages are occupying a different niche than D, they are more arguably innovative/ integrate way more research / plt theory.