We don't flock to it, they are forced upon us. Finding TVs that support DP is almost impossible.
One of the biggest problems is that shitty standards use the money they get from licensing the standard to push the standard. Good open standards often don't have a marketing budget to play with. On top of that, shitty standards can make unrealistic promises to gain an advantage. Like HDMI does with DRM. "If every device uses this standard, piracy will be a thing of the past!"