For example? We're talking about a wall mounted TV, keep in mind. Also keep in mind that we're talking about hiding, at the very least, the TV's power cable, an HDMI cable (but likely two or three), a component cable (which is actually three thick cables, and there could be two or three component cables too, up to nine cables), possibly a TosLink optical cable (maybe two if you're using input and output), a USB cable, the cable that runs from a Wii sensor bar, the Kinect camera cable, possibly even some composite or even S-video cables, etc..
The bunch of cables running to my TV is 1.5-2" in diameter. What better way is there to hide these than this--a <$4 solution that renders the cables 100% invisible and is a breeze to install? Hell, even if all you have is a power cable and a single HDMI it defeats the purpose of wall mounting your TV. Just put the TV on a stand. The whole purpose of wall mounting a TV, 100% in every way the whole purpose of wall mounting a TV is for aesthetics. It's for a clean, nice looking installation. Dangling cables ruins it. You could use a cable run, which would improve the appearance compared to just dangling cables, but that's going to be more expensive, be less attractive, and be at least as difficult to install. Not to mention that a cable run large enough to contain all the cables the average home theater has running to the TV would look ridiculous.
But maybe I'm just not familiar with the solutions to which you're referring. A link would be helpful.