Weaknesses in the technical and marketing segmentation

I also noticed weaknesses in the technical and marketing segmentation It seems that the media groups drive in favor of measuring devices for the audience measurement which cover a population with a single methodology. However, it seems that no device data collection audience is perfectly suited to all segments. Some are more suited to certain targets and others to other targets. In addition, different segments of the population are carriers of advertising targets different issues. One might expect that the most promising targets budgets should be subject to more accurate measurements and more frequent. Which directs groups to these methodological choices which require a more than a lowest common denominator and not a strategic vision of the audience?