mleach said:
But going back to DuMont...I get the idea that DuMont ( the network ) didn't really go out of business instead they just got out of the network TV game, changed their direction and their name..to Metromedia.
Keep in mind that there was a VERY significant change of ownership along the way from DuMont to Metromedia, though. The remaining DuMont O&O stations - just WABD and WTTG at the end - stayed with DuMont for a few years after the end of the network under the name "Metropolitan Broadcasting," but the key event was in 1958, when Allen DuMont sold his interests in Metropolitan to John Kluge, who already owned WNEW(AM) in New York. (The Wikipedia entry on Metromedia claims Kluge already owned WNEW-FM at that point, but I'm pretty sure it came along later in 1958.)
It was Kluge who built Metromedia from the foundation of the former DuMont O&Os, but at least to my mind "Metromedia" as we knew it in the glory years of the seventies and early eighties was much more the creation of Kluge, post-DuMont, than it was a continuation of DuMont's own efforts. The heart of Metromedia, after all, was KTTV in Los Angeles, which wasn't a DuMont O&O.
To put it another way - Kluge would have built Metromedia into more or less its final form whether or not he'd been able to buy the two DuMont stations. If he didn't get WABD, he'd have gotten WNTA channel 13 a few years later, and probably at a better price...and he'd have ended up with a UHF station in Washington down the road if WTTG hadn't been there.
But the line of succession from Metromedia to Fox is much, much clearer: Uncle Rupert absolutely needed the Metromedia stations to form the initial strong core of Fox in the mid-eighties - they put him into six of the top 10 markets on day one, and there was no other set of stations available then (and arguably since) that could have done that so smoothly. To this day, five of the Fox O&Os in top-10 markets are ex-Metromedia stations. (The discrepancy is Dallas, where Fox traded up from channel 33 to channel 4 in the New World deal.)