Nerval's Lobster writes "Roughly 85 percent of IT managers polled by Forrester said they would hold onto networking infrastructure longer, but vendors retire products prematurely in an effort to force customers to upgrade. In a response that may seem familiar to anyone who's ever been pressured into buying a maintenance contract—either by an enterprise vendor or a major electronics retailer—over 80 percent of the 304 respondents said they don't like the misrepresented cost savings, new fees, and inflexible pricing models—but buy the products anyway. One of the survey's interesting points is that IT decision makers aren't willing to contradict the vendor. The uncertainty seems to come from the fact that the vendor may in fact be right—and a customer who contradicts what they're saying may end up shouldering the blame if the equipment goes south. It's the 'you never got fired for buying IBM' argument, applied to the networking space. The problem, of course, is that the vendor often works for its own agenda. Do you upgrade when the vendor (or reseller) suggests you do so? Or do you stick to your own way of doing things?"
The best book on programming for the layman is "Alice in Wonderland";
but that's because it's the best book on anything for the layman.