|As you said, within a couple of years......I truly don't have an answer to that: Steve left, I believe because he felt his input as a writer wasn't appreciated enough and I would add, as a player, he was quite stifled by Tony. He released two solo albums without any particular fuss from the others, my personal guess is, he wasn't really missed in that department. it was a whole different story when Peter decided to take a leave of absence from the band.|
I would venture the problem was mainly timing.
Perhaps and again, I truly don't know, they felt the band should have been the main focus but eventually of course, things change and around 78 perhaps they believed it was time to try new things, without jeopardizing the band. Things change, I think we can all agree that in Genesis timeline 74, 76 and 78 are very different periods. Who knows? I personally always found odd that they went on to record Trick, which was undoubtedly a crucial moment in the band's history, while Steve was recording a solo album.