There's a for profit corporation behind it and they have investors. They'll find a way when they decide they need ROI and increase profits. They still haven't even disclosed how they'll monetize the platform afaik so they're just living off of investor capital thus far. First step of enshittification is when they monetize the platform. How it works when federated depends on how it's designed (I have no idea), but what happens to the network if Bluesky Social PBC goes under?