If you read the terms and conditions you have agreed to on these many platforms, they explicitly say that they will harvest your data and sell it to third parties for advertising purposes. Along with granting them full rights to your uploaded data. So if you try to sue them for this they will undoubtedly win. Our terms and conditions will not ask you to hand over the rights to your data, and will explicitly state that we will not collect any of your private data. If we break our own terms and conditions we will be liable for that and can be held accountable.

Most importantly Flare doesn't need your private data to make money, we just need you to contribute some storage to: 1) store other users' social content and 2) sell to clients (like dropbox does) and give most of the profits to you