Miracast was cool... while it lasted. It had some issues as a standard though (one of the biggest being no maximum latency). Apple never supported it (AirPlay), and Android only supported it from 4.2-5.0, since being replaced with Google Cast (and as ComputerWorld sarcastically put it, this was "to the immense disappointment of approximately seven people"). Miracast is still functional on Windows and Linux... but how many people use it?

The best effort, though little known, was Microsoft selling a wireless stick for $49 that would connect to your TV and only supported Miracast. However, the latency was never near as good as Microsoft portrayed (watching a movie over Miracast generally isn't fun). They still sell it apparently, but now only for business uses: https://www.microsoft.com/en-us/d/microsoft-wireless-display...