The are some lower figures, for example the two expected white knights in new media advertising won't grow to levels many were hoping for, with advertising on social networking sites only expected to be 6% of the overall online ad spend in 2012, and rich media/ video rising to 13.1%; all in all it sounds like an Internet in 5 years time that isn't that much different to now, only with more money in the pot to go around.
This makes perfect sense if we remember that advertising, while making perfect sense for search (I'm looking for something, so sell me something related to my search), is a lousy way to monetize friendships (Facebook), business relationships (LinkedIn), goofy videos (YouTube), etc.
Online revenue models should be based on "abundance" (you need lots of activity spurred by no-cost services), and then charge for something related to that activity which doesn't slow the activity. Trust-based commerce for Facebook (eBay except between known or connected buyers and sellers)? Optimized video delivery and paid-professional video placement for YouTube? Etc.
It's time for creativity to resume in Silicon Valley. Aping Google is not the way to wealth and fame, unless you're distributing a Google-like search product (and even then it's a bit of a losing proposition, as Yahoo! and Microsoft can tell you). Aping Google's key insight - provide a paid service on the back of an abundance of free services - is.