Why do “successful” technology projects fail to produce expected business results?

The mere fact that a technology is installed, operational and made available is no guarantee that the expected benefits will be realized. This is simplistic thinking that many have decried for years. Despite the support of management and the initial enthusiasm of staff, many projects that are successful from a technological point of view (quality, time, budget) turn out to be disappointing because they do not produce the results and changes that were really expected. Considering the huge sums invested in new technologies, can we really continue to ignore the phenomenon?