From the article you cited:
"Look at some of the uber-successful icons of Silicon Valley / Technology: Larry Ellison, Steve Jobs, Bill Gates, Larry/Sergey, Eric Schmidt, Andy Groves, John Doerr. Not job hoppers."
Yeah, if I owned the company and/or made millions of dollars a year from it (like all these guys), I probably wouldn't be looking for another job either. (And it's Andy Grove, not Groves.)
Note that this article is written from the point of view of an employer, not an employee. An employer would obviously be thrilled if their employees stuck around for many years, even if the work environment sucked and compensation was below average. It's great for them. Not that great for the employees, though. You shouldn't be more committed to your employer than they are to you (which isn't very much).