Exactly! And that is what makes it so sad for other families with missing children. Logically, though, they can't cover every case like this, because there are just too many. The media picks and chooses the ones they will cover and it's always the ones with the most entertainment value.
If that's the criteria, Kyron's case should soon be getting even more coverage than the large amount it's currently getting. Terri's qualifications as a made-for-tabloid character are becoming more evident with each passing day.
That said, I think it's not just "entertainment" value, in the sense that we normally think of that word, but also any kind of ratings/traffic/sales generator. The case of Rilya Wilson, the little girl in Florida who was discovered missing from her maybe-a-relative foster parent's home many months after the last time anyone (including the maybe-a-relative foster parent) had seen her, got quite a lot of coverage because it was sort of a bombshell story about the mind-boggling incompetence and negligence of the Florida child welfare system (and opened the door to lots of political noise/pseudo-action in Florida, and to somewhat similar evaluations of other states' systems). But "entertainment" wasn't a word I'd be likely to apply to the media coverage of that case.
Rilya was black and at the *very* bottom of the socioeconomic scale, but the story's political implications were very compelling to anyone who has any concern at all for suffering children, and especially to those who are paying large tax bills to support expensive government programs that are supposed to be doing some good for helpless children who have no functional family to care for them. Lots of pretty blonde white adolescent girls who've disappeared in cases that were likely "runaways" induced and assisted by an adult male "boyfriend", have gotten much less coverage than Rilya got. And follow-up mentions of Rilya have continued quite regularly for many years, as Florida and other states are called to task for failures in their child welfare systems.
To a large extent, I think what determines heavy media coverage is how well a case answers the "Can I do anything about it?" question in the minds of media consumers, or the variation "what can I do to make sure it doesn't happen to my child?" question. If there's a plausible answer to the first question -- even it's just "raise he!! with my elected representatives", or have some serious talks with my children about their activities and friends, or figure out how those social networking site thingies work -- there's potential for for heavy consumer interest.
If there's *no* plausible answer to the second question (which is often the case in the "perfect, white, financially secure, home-in-safe-suburb family" stories), that's terrifying to the average media consumer, and thus likely to draw major interest. People want to find out more and more in the hopes that they'll eventually find out that it *couldn't* have happened to them (e.g. the Smarts were secretly in league with polygamists and sold Elizabeth, JonBenet was killed by a pedophile who frequented the kiddie beauty pageants that her mother was constantly entering her in with her father's approval, etc). In other words, the interest is driven by a deep-rooted need to get information that makes the story unterrifying, that enables the consumer to say "Phew! What a relief to know that it really *couldn't* have happened to my child (or grandchild)."
Of course, many cases don't turn out to provide that comforting relief, even when the disappearance is solved, but many do. The Elizabeth Smart story had a very rare resolution, in that it turned out the "perfect family" really was about as perfect as a real family can be, and yet their daughter was still abducted (the key elements of a truly terrifying child abduction story), BUT then she was found basically unscathed and has apparently been thriving ever since -- picked up right where she left off, joined the high school track team she'd been planning to try out for, graduated from high school right on schedule, carried on with her harp studies as if nothing had ever interrupted them, went off to college, etc (Phew! Even if it *did* happen to MY more-or-less perfect family, it would surely work out okay in the end, because that's how it worked out for the Smart family"). And that's a big part of why she *still* gets quite a lot of media attention. That, and her perfect poise in front of a media camera -- if anybody here hasn't seen the video of her interview with the utterly obnoxious Nancy Grace, you've missed a truly awesome "victory lap" by a child abduction/rape survivor.