I think the only way to revive rock is to do what these bands are doing--start it up all over again, from the ground up, spending years being ignored but plugging away until college stations and people who just want something with that vibe come around.
It won't happen over night, but rock can be the "rebel" music it once was again. As long as these bands resist the siren song of cash and MTV and stick to their guns.
In some cases, radio doesn't notice at all. But other bands do. The Big Boys/Poison 13 begat Green River which begat Mudhoney and Pearl Jam which begat a whole lot of bands (which did get on the radio).
Just because the Hall of Fame doesn't know history (or care to acknowledge small/indie label bands) doesn't mean that the musicians don't know their history. To me the whole history of music post-Woodstock is false. The corporations always had a hand in things but "corporate rock" was ushered in the 1970s. And more radio stations started locking playlists and format to "nostalgia" hits (whether that was the pre-rock era, golden oldies, classic rock, etc.).
I saw an interesting essay which traced how the music seems to go in movements where "rock" makes the same trajectory again and again (through different trends including country, punk, songwriter, pop...). I don't fully agree with the position but it was interesting to see how some bands (or eras) do make the same "discoveries" all over.