This is wrong:
"And if you’re lucky enough to get a life-changing acquisition offer like Mike Arrington just did, follow his example. Go for the billion dollars when you start your next company—by then you’ll have more experience and you won’t be risking the kids’ college education."
His mistake is to forget that the two options aren't exclusive. A large percentage of founders in startups successful enough to be on their way to being worth a billion dollars manage to cash out partially en route. So you don't have to choose between trying to make the company a big success and your kids' educations.
How do you decide whether or not to sell? There are two factors to consider: how much you like the work, and how good the offer is. If working on the company is what you want to do with your life, as it seems to be for Mark Zuckerberg for example, then you shouldn't sell unless you need to. Whereas if someone makes you an offer so good you'd be crazy to refuse it, then you might want to take it, even if you hadn't planned to sell.
(Strictly speaking, if you have shareholders, you have a fiduciary duty to do whatever's right for them. But since the founders' level of motivation is usually the dominant factor in the future value of early stage startups, in practice that usually reduces to doing what you prefer.)