Valid points, I won't bore HN with my theories about what makes the information economy tick but suffice it to say that the value chain will evolve as efficiencies in the market are developed.
"The Google IPO gains made up for the losses on the earlier bets, but everything comes down to timing & then just sticking with something you believe in."
Yes, but Google's performance in the last 5 years hasn't been stellar (from a stock perspective, instead what might have been dividends is being banked by the company, which is another rant) The tricky bit is understanding why Google and not Altavista or Yahoo? Not because they didn't have traction and penetration, but I believe because they didn't understand the economics of what they were selling.
Imagine that Zog the caveman starts getting trade goods for pies made out of mud. He's thrilled and others get into the mud pie business, but one guy realizes that the pies that people want are round and hard and so he also gets into the mud pie business but only makes his pies out of hard fired clay. He becomes the dominant mud pie seller and runs the other guys out of business. Could they have prevented it? Sure they could but they needed a better understanding of how and why customers valued their mud pies.
Google got there sooner and it gave them a tremendous advantage, but at the same time, to completely abuse the metaphor, they realized they had an elephant's tail and knew when to step aside when the crap came out. But they still struggle with elephantness, or at least they did 12 months ago :-)