Kind of a chicken-egg thing tho, innit? You’re competing against Apple (HomeKit) / Google (Thread) and they’re shipping solutions, not a framework. If it’s media playing you’re going after, it’s even more of a mess: Apple (AirPlay), Google (Chromecast), Sonos, Microsoft…. Hell, UPnP seems to be most built out around Media Streaming.
In its current guise, AllJoyn’s route to market is inside Atheros WiFi chips, with AllPlay’s audio and media streaming device discovery and management functionality available to developers who include these chips inside their devices. The eventual roadmap and plan will see Qualcomm push AllJoyn, the software framework that powers AllPlay, as the main attraction of its WiFi chips - instead of pushing AllPlay as centerpiece, as is currently the case. It hopes to use the AllSeen Alliance to help further its installation ambitions.