Wild Bill,
The sad fact is is that TV programming these days is driven not by what a mass audience wants to see, but whatever the advertiser's chosen demographic might watch. TV isn't about providing entertainment for its own sake, it is about selling advertising, any entertainment provided is meerly bait for the 20+ minutes of commercials shown each hour. Sure, the masses can fantasise a bit watching the Barrett-Jackson Show a time or two, then get discouraged by the fact that their next car they buy will be a 5 year old Ford Focus. People who can afford to sink 6 or 7 figures into a classic car are a fatter demographic than the average racing fan. They got the money to spend on the expensive products featured in the ads, and the show itself is little but a commercial for Barrett-Jackson.
I noticed last summer on the History and Discovery Channels, both owned by Disney were overrun by shows about Pirates, from Pirate Tech on Modern Marvels to a special Pirate Edition of Mythbusters. Any coincidence that the most hyped movie of the year was the sequel to "Pirates of the Carribean"? Movies themselves have become vehicles for Product Placements as much as entertainment vehicles.
PBS had degenerated as well. Unlike commercial TV, they have to go after viewers pocketbooks directly, and while Mom and Pop schoolteacher and bus driver might throw $50 a year at PBS, their real targets are the well-heeled classes that write checks for thousands of dollars. This is why they carry so many reruns of "Antiques Roadshow", and why the typical "This Old House" series features multimillion dollar properties with million dollar rennovation budgets. This pattern is repeated on many of the cable channels, which feature variations on fix up this old dump and get rich in the process. Ditto for other style and makeover shows, and I won't even mention what has happened to MTV and VH1 as of late!
Advertising in general presents a distorted picture of what is really worth spending money on to the average person, creating demand for things that don't really benefit them all that much, and in many cases can ill-afford. This leads to discontent and financial problems, which has led to the rise of another class of advertisers: the Mortgage Brokers, Credit Repair Specialists, and Divorce Attorneys, often seen on cable channels which feature nothing but back episodes of COPS and CSI.