Big Tech Privacy Moves Spur Companies to Amass Customer Data

New privacy protections put in place by tech giants and governments are threatening the flow of user data that companies rely on to target consumers with online ads.

As a result, companies are taking matters into their own hands. Across nearly every sector, from brewers to fast-food chains to makers of consumer products, marketers are rushing to collect their own information on consumers, seeking to build millions of detailed customer profiles.