A Data warehousing can become an exercise in data for the sake of the data.
B In certain organizations ad hoc end user query/reporting tools do not "take".
C Many "strategic applications" of data warehousing have a short life span and require the developers to put together a technically inelegant system quickly.
D Data warehousing can have a learning curve that may be too long for impatient firms.
E Data warehousing systems can require a great deal of "maintenance" which many organizations cannot or will not support.