A downside is that it strengthens huge companies (e.g. Google, Apple) that have that information from one of their products (e.g. Google Maps) and are able to u

A downside is that it strengthens huge companies (e.g. Google, Apple) that have that information from one of their products (e.g. Google Maps) and are able to use it in another one (e.g. Google Ads). That being said, data brokers seem to be rather poorly behaved players in the market with little respects for users privacy. So it's a tradeoff I guess.