Answer:
GIS technology might be considered as expensive software.
It as well requires enormous data inputs amount that are needed to be practical for some other tasks and so the more data that is to put in.
Since the earth is round and so there would be geographic error that will increase as you get in a larger scale.
GIS layers might lead to some costly mistakes once the property agents are to interpret the GIS map or the design of the engineer around the utility lines of the GIS.
There might be failures in initiating or initiating additional effort in order to fully implement the GIS but there might be large benefits to anticipate as well.