They never gone do that for obvious reason,let’s look who created and who are on the list of HDMI group…Lattice Semiconductor, Maxell, Matsushita Electric Industrial, Philips, Sony, Technicolor, TOSHIBA big players of TV so they created their own proprietary standard spread it on the market and u have to pay money for licensing manufactur to install it in ur device such as TV boxes, videocards and etc.Meanwhile display port is open standard which even technically dominate HDMI about speed of transfer and other things.

Grandfather frost if be more specific