The current solutions are to either store your photos with Google, at the expense of privacy, or store them on your own servers, at the expense of running those

The current solutions are to either store your photos with Google, at the expense of privacy, or store them on your own servers, at the expense of running those servers. We'd help you store, sync, and serve your photos across the devices you already own. The goal would be to have all of the convenience of Google's servers with the privacy of your own. Users would pay a subscription for the service, regardless of how much they store or serve.