Storage protocols like remoteStorage and Solid have a chicken/egg problem. They need really good apps, but no one is going to write apps, services (like backup), or other integrations until there are lots of users.

But how do you attract users without these things already in place?

There needs to be a killer service that offers something better than Google Drive, Dropbox, etc can provide. They're unlikely to be able to compete on storage price, so they'll need to differentiate in some other way.

I'm bullish on Solid in the long run, but it's a tricky problem.

This was my first time seeing it - looks like there's a small community around it. Their website lists two hosting providers now...