Doug Kaye’s essay on “When to dive into Web Services?” (mentioned here earlier) has stimulated some additional thinking.
What Doug’s illustrating is a different spin on traditional CIO “Return on Investment” thinking — pointing out that the ROI actually changes based upon when action is taken because of lower costs associated with implementation as the technology matures. This is intuitive — and important.
Some technologies (PKI comes to mind) never seem to make it down the cost slope that Doug portrays. They stall, skills don’t get developed, implementations stay too expensive, etc. In those cases, the cost vs. value curves never touch and implementations stall.