A common problem in contemporary culture is a disregard for history, which can be seen not only in startup companies and the technology industry, but throughout society as a whole. During times of significant change, it is common for people to believe that they are much more intelligent and advanced than previous generations, who they may view as ignorant or backward. As the consequences of the revolution inevitably become clear, when the revolution turns on its children, people often begin to appreciate the positive aspects of the past and recognize that revolutions are usually not the solution you want (for the exact same reason why you usually don't want to rewrite a huge software project).
Let us hope that the current period of revolution is coming to an end.