Our colleagues at the German DFG have recently published a valuable new report title "Data Tracking in Research: Aggregation and Use or Sale of Usage Data by Academic Publishers"  which adds some additional insights to issues that CNI and other organizations have been tracking in recent years. See

https://www.dfg.de/download/pdf/foerderung/programme/lis/datentracking_papier_en.pdf

Clifford Lynch
Director, CNI