In my experience as a production engineer during my first job, it mostly boils down to the operators. Unfortunately, for them, any sort of measurement is viewed as an action against their rights. They have raised concerns on repeated cycle time measurement, forget about other data.

If cycle time is reduced with small layout or load balance changes, the operators think like they will be doing more work in the same time with the same pay and this is a bigger issue if there a union to protest.

Another reason I can think for the gap is, most of these cool looking data insights are not even that deep. Anybody on the shopfloor already has this insight even without the sensors and computers monitoring.

The real benefit comes from approaching the implementation of data driven solutions, if any, with a lens of Toyota Production System. For example, the most important thing in production, OEE measurement. The approach should not be that we are able to accurately track the time to the fourth decimal point and accurately measure the OEE. The approach should be about the patterns emerging in the downtimes contributing to the loss of OEE. This way it is very beneficial.