Never Going Away: It’s hard to conceive how tech giants will be destroyed. Might it be Government regulation? Another Great Depression? Genius disruption from Topeka, Kansas? This week, Paul Ford and Rich Ziade discuss the changeable future of tech by looking to the past. How does a company go from owning the market in a red-hot moment to a shadow of its former self? We talk about where companies like Microsoft and Xerox went wrong — and what they did right — while trying to predict what will finally undo the reigning champs.