Earlier quoted context omitted.
on site at a client fresh after they started upgrading people to USB-C/thunderbolt MBPs/Airs... Very quickly meetings started with question of "who has a laptop with real HDMI/DisplayPort? We would like to start in 15s instead of 15 minutes of fighting with dongles..."
Only companies with disfunctional IT departments who didn't bother to install streaming devices to the big screens.
Many "streamable" options often end up actually using HDMI dongles, if working at all. Or work with very limited set of systems (the weird apparently undocumented reverse-RDP for projectors in Windows, intel-proprietary streaming, etc.)