There's a number of things that have happened in the organic search area of Google that seem to suggest a declining interest in quality organic results. There's Matt Cutts' long leave of absence, his departure, and the announcement that he's not really being replaced. A much lower volume of communication from Google on initiatives in the space (they used to talk endlessly about Panda, Penguin, etc). Amit's original r…
c) "Search" is changing towards giving information rather than to websites.
Think Siri/Cortana/Alexa. Even Google tries to give you an answer rather than a website.
Also information is moving from "spread thin" websites to social graphs and more centralised locations