You mean the one where some large corporations are doing what they can to keep it from improving?
So in fact the "other players" _are_ directing their effort to something they perceive as better than Dart: Harmony.
As for the rest, what will "win" is not necessarily going to be based on the merits of the technology but on the strength of single-vendor tie-ins, in the usual way....
Regardless of who the actors are that are most currently gumming up the works, all of this just proves the point that standard bodies are not an effective tool for actually creating useful technology.
As you note, getting the innovation into a standard is the hard part, when some of the parties to the standards process don't actually want the language to improve...