(My experience has been that) most large companies lack defined processes and business models in critical areas because their models are too complex to fully define in software -- outside organisations know crap all about these complexities, and internally the skill sets are too low to implement a complex system --- and to be honest, who wants to spend three years and millions of dollars coding up an application for a business model that has already changed in that time? Sometimes, simple CRUD Apps are all that is needed.