[acdha]

> That's a prospect that is (IMO) far more terrifying than what it could prevent (some users falling for certain types of phishing attacks that install spyware).

I disagree with that conclusion (the latter scenario happens frequently and has lead to significant consequences, including death) but completely agree that it's not a good situation that the alternative is giving a couple of companies control over who gets to ship software. That's why I described it as a market failure — as a user you're left picking which set of drawbacks is less of a problem for you.

What I'd like is basically opening up the App Store walls: allow users to enable third-party stores but everyone runs their apps inside the same sandbox, and the OS vendor retains some global kill switch for malware but with some level of public oversight.

One edge case for this would be the apps which need special permissions: for example, some cell carriers have special entitlements on iOS which allow their apps to talk to their networks in ways which normally are blocked. Reconciling edge cases like that with multiple stores would require care.