It favors a particular implementation (Chromecast) in a market where there are several competing standards and no established leader. Shouldn't Miracast, for example, "just work" as well?
Miracast is a streaming endpoint. As in, you typically throw H264+AAC at it.
Chromecast, however, is amount remote controlling a secondary Chrome HTML canvas on the Chromecast, where the intended use is manipulating a <video> object.
You can cast a tab to your Chromecast, thus treating it like Miracast, but that is largely not what the Chromecast is meant for.
Example, I can have Youtube (the website or the phone app) cast a queue of videos to the Chromecast, interact with that queue from multiple devices, and even disconnect all devices, and the Chromecast keeps playing because it streams the video directly from Youtube, not my phone or browser.
Miracast cannot do any of these things.
In addition, the only functioning Miracast device I've ever discovered is Microsoft's Wireless Display Adapter. All the built in Miracast end point impls in TVs and such are utter garbage and usually don't work.
I don't know of any competing standards. The Matchstick tried but failed (I think they had DRM problems). Miracast is completely different, it deals with video to remove displays where as chromecast (primarily) is about loading a URL on a remote display with some communication primitives.
I really wish there was a competing product/standard, but I don't know of one.
Chromecast, however, is amount remote controlling a secondary Chrome HTML canvas on the Chromecast, where the intended use is manipulating a <video> object.
You can cast a tab to your Chromecast, thus treating it like Miracast, but that is largely not what the Chromecast is meant for.
Example, I can have Youtube (the website or the phone app) cast a queue of videos to the Chromecast, interact with that queue from multiple devices, and even disconnect all devices, and the Chromecast keeps playing because it streams the video directly from Youtube, not my phone or browser.
Miracast cannot do any of these things.
In addition, the only functioning Miracast device I've ever discovered is Microsoft's Wireless Display Adapter. All the built in Miracast end point impls in TVs and such are utter garbage and usually don't work.