I expect google buys data from data brokers and this is counted as sufficiently anonymous to not be included in the location history google shows. But this miss

I expect google buys data from data brokers and this is counted as sufficiently anonymous to not be included in the location history google shows. But this misses the point because looking at your location history shows you the quality of a tiny fraction of Google’s location data and don’t tell you much about the rest of the data