> The problem is that any success in delivering past contracts does not guarantee success in future in software technology where a typical software technology b

> The problem is that any success in delivering past contracts does not guarantee success in future in software technology where a typical software technology becomes obsolete every 3 years. They don't even seem to be saying "because Deloitte was successful in the past". It's literally saying "because they're the only ones who have access to their proprietary system that we already locked ourselves in too.... they get the business". "...so the staffs are ever more transient". Yeah, there's some idea that "company X" does ABC. The people at company X do ABC, but you are at the whim of institutional knowledge and tribal info systems within that company. The superstars who made ABC work 4 years ago may all be gone, and the current people are trying to make a name for themselves by making 'The New Process' so any success from ABC isn't at all guaranteed to translate to your new project.