QUOTE(Robert Lynch @ Dec 2 2006, 07:07 AM) [snapback]1265536[/snapback]
The reason is that in 1984, nobody was listening to disco anymore. It was either Hi-NRG, New Wave, alternative, pop rock, hair metal, hip hop, etc. Hell, even children of the 80s would rather die than listen to another disco song ever. Disco wasn't in and it faded quickly with more of the 70s disco artists as well as early disco 80s artist due to the changing of the times. It is just that once the 70s decade is over, major 70s artists either have to evolve or devolve. Didn't work well for ELO or (gasp) Robert Plant. But some do work well: Bruce Springsteen, Blondie, Rick James, Teena Marie, The Rolling Stones, etc.
Michael Jackon and Genesis are 2 more artists who managed to follow up from their success in the 70's. There are probably some more that i have forgotten about. Like you said, most artists evolved (Jacko from disco to pop, and Genesis from prog-rock to electro pop-rock?).
On the subject of Jacko and disco, i think a tune from "Off The Wall" should have been included on Paradise. IMO, it's probably the best disco album ever, as it had very little added cheese. I guess R* didn't want to include him, possibly because of his trial and what not. Of course, Judas Priest is featured on VRock, and Dave Holland, their drummer during that period, was recently convicted of molesting a disabled teenager. So i hope there was another reason for leaving him out.