Understanding the Value Cycle: Create, Communicate, Deliver, Capture
wensing.tumblr.com
wensing.tumblr.com
Facebook could be an example of a startup with great value who didn't communicate or capture until they were extremely big.
Communicate and capture are probably underestimated in terms of difficulty because the number of people that have 'gotten that far' is limited and a successful execution of those steps looks easy in hindsight.
Also, notice, you left out Deliver (whether intentionally or not). It's the most easily ignored IMO.