That is, strictly speaking, not true. Trivially so, since you said “no interest.” If they had none at all, why would they go so far as to actively support non-

That is, strictly speaking, not true. Trivially so, since you said “no interest.” If they had none at all, why would they go so far as to actively support non-Apple services? Relatedly, their aggressive support of the Web as a platform is by definition interoperable. Their best-in-class mobile browser (or nearly — source: PPK/Quirksmode) can almost be considered a universal interoperability module.