If you think of "privacy-preserving" for a company as a costly virtue, then the standard advice is to appear virtuous without actually bearing all the cost of t

If you think of "privacy-preserving" for a company as a costly virtue, then the standard advice is to appear virtuous without actually bearing all the cost of truly being virtious. Since they are closed source and secretive, there is a significant information asymmetry and we will never know how honest they are being. Firefox, on the other hand, has an incentive to honestly preserve privacy, as their attempts to test the water on privacy-reducing features have a high probability of becoming public.