alt Hacker Newsand the reason why that data is available for sale, starts with forced collection of data, if you want to participate in an app store as a developer.
you cant sell what you dont have unless you lie lower than a rug.
fix the data collection problem and a second order effect of no data for sale emerges.
Are you suggesting Android/iOS app developers are forced into data collection somehow? If so, how? I'm genuinely curious.