I'm not so sure that it is that easy to determine the success of DLNA at this point. A lot of the Comcast acquisition of Time-Warner is driven by positioning for a world where cable TV is shrinking and ISP business is growing. If people get their TV from a proprietary cable box it tends to drive them into a vertical and proprietary technology stack, but if it comes from a network connection then things are more complicated and there are more opportunities to put together interesting combinations. This is where DLNA can still shine, if it can put together a combination that normal people can accept and use.
Sometimes, standards efforts get overtaken by events? I would say that Chromecast allows people to transfer content from your tablet screen to your TV screen, no? From a USB port on the tablet, wirelessly to an HDMI port on the TV.
Or, you can always connect a wired HDMI interface from PC to TV. Many PCs have HDMI interfaces these days. That autoconfigures too. Or, RGB analog. Many flat panel TVs support that too, these days.
The Other Tesla David Blaza5 comments I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...