Traditionally, these data sets have lived in silos. But what could happen if it all was aggregated safely in one place? It seems unwise IMO for me to give

Traditionally, these data sets have lived in silos. But what could happen if it all was aggregated safely in one place? It seems unwise IMO for me to give a large corporation (Apple, Equifax, etc) rich data with which to characterize my lifestyle and physical health.