The vocal gymnastic yodeling of CHR divas, or the howling of pin-cushion-shredders doesn't cut it with guys (and women) who grew up on Steely Dan, Paul Simon, James Taylor, the Beatles and Joni Mitchell, but don't want to live their lives entirely in the past.
Exactly. As Buddy says, they have money. And they might donate it to a radio station that makes them feel current and active.
For example, there's a new album with Alison Krauss. Yes, she's bluegrass, but she also duets with Robert Plant.