GMW alludes to this -- you are pointing to a time in literature when three-dimensional (highly developed, believable) characters and sympathetic villains were not in vogue. All those works you mention have a dated feel.
So, for example, do the early works of Frederick Forsyth, one of my longtime favorite thriller authors. I doubt his "The Day of the Jackal" would be a best seller if it was first released today. Good novel but horribly dated by today's standards of pacing, dialog, and character development.
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