Yes. They make money from knowing who people are, and selling that. This cleaves the driving tor concept by deanonymizing users. For anybody as large as Faceb

Yes. They make money from knowing who people are, and selling that. This cleaves the driving tor concept by deanonymizing users. For anybody as large as Facebook, if enough people go for it, the remaining slice of the pie will be really small (because not all have tor, but many of those that have, have Fb). Derive conclusions accordingly.