If you meant to call MDP proprietary, you would be wrong. Apple doesn't own the standard, it's part of the Displayport standard - a VESA standard.Apple should just stop with their own priority ports and implement a HDMI port on macbooks. Stupid enough that you have to buy an adapter to use any non-apple monitor.
HDMI is actually more proprietary than MDP is.
ETA: Beaten to the punch by a ton of folks...