Sounds to some extent like advertising and marketing in a market like India which is still predominantly offline and driven by visibility.
Outdoor billboards are often priced based on raw traffic count. Imagine using a cheap license plate reader to sample traffic looking for enough identity data to map back to actual consumer behavior. Even if you can only do it for a few days and only a fraction of percent of your samples correlate to partial data, given high enough stakes and noise - just adding that as a correction overlay on your existing shitty model can yield a winning edge. In the land of illusions, any ground truth can be gold.