What I've seen in many churches today, is the same as in radio. There is a parallel. Many churches are targeting the young, just as radio does. These typically are praise churches. These praise churches offer what is called "Seeker Services". Services designed for the young unchurched. That doesn't sound so bad, but what I've found in the couple of "seeker churches" is they do not offer a Believers Service on Sunday morning. If you want to be fed at a more mature level, you need to come on Wednesday night or join a small group. For many people, Sunday is their worship day (shift workers and folks in retail have enough trouble making a service without having to attend multiple services to get spiritually fed).
I've got no problem with trying to reach the lost, that is what we as supposed to do, but once you get them saved, then you need to feed them, disciple them into solid believers. That may have a lot to do with many folks turning more to Christian radio programs where the "radio pastor" is more of a Bible Teacher than an evangelist. This is the one place they can get a meaty sermon vs the milk sermon for babies. Unfortunately, the churches that generally offer a more indepth sermon meant for a believer usually offer older music (hymns, Gregorian Chants, etc) that the young aren't interested in, which is unfortunate for them as they miss a opportunity to grow in their walk and worship using some of the wonderful music from ranges from today to the past 500 years. That doesn't mean no praise church offers an indepth Bible sermon on Sunday mornings, but they seem to be fewer and far between as the emphasis seems to be on reaching the young for Christ. Dumbing down the message, Christian Lite as some have coined it is becoming the trend more and more.
So Christian radio's real Bible teaching programs like The Lutheran Hour, Alister Begg, Chuck Swindoll, Charles Stanley, etc, etc, may become more important to help grow the maturing flock once they've burned out on the Pablum they're being fed in many of today's churches.