I used to think this was true in the tech world, but I don't think it is, at least not in the last 10-15 years. If power users were trendsetters, there'd be a lot more people running desktop Linux these days. I think the time in which the most dedicated and enthusiastic computer users reflected the leading edge of the rest of the market is long gone, unfortunately.
However, I do think turning off power users is a great way for the company to shoot itself in the foot when it comes to recruitment. They really depend on a certain degree of enthusiasm to get the kind of engineering talent they want to get, much more so than money or the work environment or perqs. If they no longer inspire that enthusiasm in as many people, it'll make it that much more difficult to bring good people together to do whatever they want to do next. Unfortunately the general trend seems to be a long, slow transition from being the BMW of the computer industry to being the Chipotle of the tech industry. I'm sure all the metrics favor being Chipotle (and gosh do they love metrics), but that doesn't do anything to help make Chipotle a desirable place to work at that draws all the best talent.
However, I do think turning off power users is a great way for the company to shoot itself in the foot when it comes to recruitment. They really depend on a certain degree of enthusiasm to get the kind of engineering talent they want to get, much more so than money or the work environment or perqs. If they no longer inspire that enthusiasm in as many people, it'll make it that much more difficult to bring good people together to do whatever they want to do next. Unfortunately the general trend seems to be a long, slow transition from being the BMW of the computer industry to being the Chipotle of the tech industry. I'm sure all the metrics favor being Chipotle (and gosh do they love metrics), but that doesn't do anything to help make Chipotle a desirable place to work at that draws all the best talent.