There was nothing wrong with network radio of the 1930's, 40's and early 50's. Many great shows with all sorts of great talent. Do you have a problem with TV being mostly on the bird feeding network and syndicated stuff or than if it bleeds it leads local news?
I rarely listen to WILM anymore, not because their shows come from the bird, but because they are boring and all essentially say the same thing. Obama and Democrats are evil, and the GOP/TEA party is good. Got it. If WILM had interesting programming coming from the bird, I'd tune in, they don't, so I don't other than Kim Kommando on the weekends sometimes.
I like the I heart radio network programming of Foggy Mountain Country music on WDSD-HD2 that's available online. It isn't local, but has great classic country from the 1960's-2000. NPR has some good network shows that I also listen to.
WDEL airs Phillies and Eagles games, they are not local shows, but a network feed from the Phillies or Eagles radio networks. During the various playoffs the games on WDEL come from Westwood One. The President's State of the Union, etc, I hear via either NPR on WHYY-FM or CBS radio via WDEL. You get the point.
In terms of local, sure, I listen to Al Messitti sometimes and Allan Loudell sometimes both on WDEL. I also listen to the local Radio Times on WHYY-FM. If the show is good, it doesn't matter to me if it is local or via a network. My guess is most listeners feel that way. We radio folks get uptight about voice tracking. The average listener doesn't care IF the music is what they want unless the voice tracker has an irritating voice or gets too talky.
Radio went local in the 1950's and 60's as network TV took radio listeners away essentially killing off those radio network shows, many of the network radio shows had in fact transferred to TV from radio as they were so popular. So radio reinvented itself as it has done a number of times.
Even though I personally don't listen to CC's line up of network radio shows, it isn't evil, just boring for my ear. They are banking on enough other folks who don't agree with me to be listening in.