[x3haloed]

I’ve also been thinking about this problem for a while. The push model and account portability are definitely the most important dimensions of this issue.

Can’t we just solve this problem with IPFS? And something like DHT tables for protocol-level awareness of state changes?

Your client app would just be responsible for pushing and pinning content to IPFS, scanning state tables for interesting updates, and then sending you push notifications.

Really simple to take your IPFS key with you can switch to a new app.

[anacrolix]

There's nothing simple or reliable about IPFS.