On facebook, your data is their profit. You have no control over what happens to that data and, if what we know so far is any indication, facebook doesn't always have your best interests at heart.
Robinbook explores facebook's data policies by letting you download data they don't let you access, proving how they use dark design patterns to make it hard for you to give them up.
If you don't control your data, then these companies can choose how and where it gets used. By taking control, we gain the power to pick platforms that respect our values both through their actions and implementations.
Put your data to use! Upload it to a service that shares your values.
These systems allow users to host their own servers and identities, so that you have full control over your data as it can be restricted to your machine.
These are full ecosystems allowing current browsers to connect to decentralized networks. They may not be much right now, but these may be the Netscape equivalent of the future internet.