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.