It's a bit disappointing that you would talk down a competitor without knowing much about them, and then, to add insult to injury speculate about all kinds of things without having facts to diss them some more.
My point was that those questions I mentioned above are important to Dgraph users and I don't think Redis even projects itself as a persistence-first DB. I might be wrong. Either ways, our audience is quite different when it comes to enterprises at least.
I know the founders of Redis Labs, met them as well and they're awesome people.