The piece on generating demand for branded queries rather than just product-based ones is particularly interesting here. It sounds as though it'll be more important than ever to have a strong brand in order to succeed (rather than just having a well-optimized site -- and ideally, having the strategic, technical, and creative sides all working together cohesively). Perhaps it's possible that brand exposure through things like answer boxes can still deliver some value too, even if it's difficult to measure, and CTRs are diminished?
Remember when you used to rely solely on search engines for traffic? Remember when you worked on SEO and lived and died by your placement in Google? Were you #1? Assured success. Well, okay, maybe not assured. Success only came if the keywords were relevant to your site users, but it was the only real roadmap to generating site traffic and revenue.