Shortfalls in System Projects?

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Note that system projects must, within reason, take responsibility for how the system turns out, and thus shortfalls in the systems are themselves shortfalls in the system projects.

System projects are frequently late and overbudget. It is not unusual for system projects to be abandoned after large expenditure. Shortcomings are often identified during testing and acceptance requiring expensive fixes and rework.
Customers often have to accept and live with the consequences of performance shortfalls. Systems are often difficult to use and require expensive modifications. Systems are often much more expensive to maintain than expected.
Systems often 'breakdown' or prove to be unusable at critical times. Systems are often difficult to update and have to be retired earlier than expected. Information about a system is often not easily available for use during upgrades or development of successor systems.