It's not clear how this differs from a common micro to fullsize HDMI cable that my phone and, I'm assuming, a lot of other phones can use to connect to an HDMI TV or monitor. I think the only listed compatibility that I can't get with just a cable is the analog VGA, 3D and 4K, none of which are all that relevant to business. Is an HDMI output rare on smart phones?
To really make the "my phone is my PC" setup work, it really needs to be wireless. Instead of needing to cable up, you just walk into your office or home and sit down in front of a wireless keyboard, mouse and monitor setup.