Define "Big Rock." Is it back when classic rock bands used to sell out football stadiums? I actually think "Big Rock" was killed by Hair Metal. I remember watching one of those VH1 rockumentaries about the heyday of Heavy Metal, from it's beginnings in the '70s to the Hair Metal era in the late '80s/early '90s. They had an interview with Lita Ford on some beach, wrapped in a blanket, staring wistfully at the sea. They ask her what her feelings on the era were and she went into this diatribe about how Hair Metal was the last genre when it was still "Rock and Roll" and how Grunge killed true Rock music. She was so bitter. All I can think of is, "No, you and your compatriots did it to yourselves, with your focus on hair, makeup, overly slick production and formulaic songwriting." You want to talk about music that is "gross?" "Kiss Me Deadly" was terrible.
I worked the summers of 90-92 at Blossom Music Center when Hair Metal and Arena Rock were on the way out and Grunge and Alt-Rock were on the way in. One of the things you noticed was that there was a serious disconnect between what was being played on the radio and what shows were selling at the concert venues. Cleveland radio stations were still all about the Hard Rock and Hair Metal, but most of those bands were really struggling to sell tickets to their shows. Bands like Motley Crue and Poison, who used to sell out arenas couldn't even sell out the pavilion and Tesla's ticket sales were so bad the concert promoter asked us to bring in all the fans off the lawn and put them in the pavilion so that it didn't look so bad. Meanwhile, Lollapalooza would come through and sell out easily. I can remember playing Jane's Addiction on my college radio show and then, six months later, seeing them sell out the James A. Rhodes Arena at the University of Akron with the Rollins band opening up. Fun and interesting times.
I would say that I like bands like the Decemberists, that bring in influences from other music genres. And I like the White Stripes and the Black Keys. I suspect they'll get some mentions for the Rock Hall when the time comes. If you want to talk about gross bands that might get some Rock Hall love, I'm waiting to see what happens when Limp Bizkit, Nickelback, Fall Out Boy, and My Chemical Romance are eligible.