Wifi hotspot works fine for me. What doesn't work is just sharing stuff between different people and devices. I want to send a web page to my son on his deskto

Wifi hotspot works fine for me. What doesn't work is just sharing stuff between different people and devices. I want to send a web page to my son on his desktop. I want to play a video on the TV. I want to play some music on the main speakers. I want to collaborate on annotating an image with my wife. The whole family wants access to the e-book collection, movies, music, etc. All these things are possible now to an extent, but each and every one is some degree of difficult to set up, and it's own little thing. And not even mentioning the fractured wasteland that is messaging. All of this should be baked into the very fabric of computing by now IMHO, a seamless landscape of shared data.