> There was never a technical reason why we couldn't have this. Mostly Microsoft and Apple blocked this sort of generalization at every turn. On the contrary,

> There was never a technical reason why we couldn't have this. Mostly Microsoft and Apple blocked this sort of generalization at every turn. On the contrary, Microsoft tried really hard with UPnP/PnP-X/DPWS/Rally/Miracast*/etc but nobody was interested. *BTW any Windows 10+ device can act as a Miracast sink (screen) so you can link Windows laptops/tablets as extra screens without any additional software.