More private an independent mints are still way better than a coinbase, and it's hard to centralize as long as running a mint is open source and not too hard. Uncle Jim model will be rare but I can see small businesses or services running a mint that people can use.
Discussion
It's complicated and normal users do not understand the nuance. For a start, they hear "privacy" and think it's good but don't understand that it's utterly stupid and insane to give a "private", anonymous person that claims to be a "privacy activist" on the internet control over their money, yet that is what many do and defend.
> The people are retarded

