OK. I might need correcting, but then why the switch to Displayport on PC's?
What more do I need to know?
Edit: I've already been answered, but the switch in terminology is still suspicious to me.
Suspicious? Like what, a conspiracy? lol
HDMI is a proprietary connection with royalty fees/licensing.
DisplayPort is a VESA-specification that does not involve any licensing fees.
HDMI has firmly established itself as the connection standard in the living room, though new versions of the spec are released from time to time. Each version increase includes more bandwidth, which allows it to support more content. The original HDMI couldn't support FullHD 3D. Now it can.
HDMI never really made a huge splash in the PC world. When HDMI was being placed on more devices, DVI was still always included. DisplayPort has basically moved to replace both and most manufacturers have latched onto it. Quite a few monitors also include DVI, HDMI and DisplayPort, since we're still very much in a transition phase as opposed to an outright replacement.