Jack Ganssle has a great column on embedded.com on build vs. buy decision making. Some of these decisions seem so easy to make and yet time and time again engineering managers opt to invest many times the cost of a commercial product, in engineering expense, to go the build route.
There are hundreds of RTOSs in the market with just about as many price points and business models. There must an operating system for every possible project that can be quickly and economically purchased and yet in the end many managers have a hard time parting with cash. It seems that we undervalue engineering time, while at the same we discount the utility of cash. We forget that it is just one more tool in our toolbox. It's changing, but not fast enough.
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