Regarding Peter Gabriel he didn't appear with Genesis because he was preparing for a tour. It was a shame but that's what he's like. There was no animosity.
I'm very happy for ELO & Yes. I hope Roy Wood & Bev Bevan will show up for ELO's induction.
Ultimately the final say is held by Jann Wenner, the Rolling Stone editor, who hates progressive rock. He apparently also hates Dire Straits. I'm still waiting.