Publishers and editors seem to suffer from what appears to be adult ADHD (Disclaimer: I am not a psych doctor, so I can't make this diagnosis for real). They press new writers to maintain constant tension for their potential readers; keep the pressure on, keep them turning pages; in other words, don't bore them with anything that might strain their weak, failing, meager attention spans.
It won't be long that novels will have to be the length of short stories and short stories will have to be one word that captures the entire emotional and psychological life of a character: e.g. Jesus wept.
I contend that we, as humans, as readers, as writers, have the responsibility to rebel against the publishers and editors, for the sake of our children and their children. Attention spans are quickly becoming endangered and if something drastic is not done, will follow the Dodo into extinction.