Mozilla are in a unique position with control over the client-side software. I think they're best to focus on the things that can only exist within that client

Mozilla are in a unique position with control over the client-side software. I think they're best to focus on the things that can only exist within that client. Because any other party can start a 'Hello' like service online. Or write a PDF reader (or a program to open any other file format) I don't think we should be comparing to Chrome here; which doesn't purport to have the 'noble' aims of the Mozilla foundation. A browser should not be part of an 'ecosystem' of online services; for me, having a strong web means that the two are decoupled.