I don't see where "actively block them" comes in. Changing the database format of your product is something you'd want the latitude to do. The fact that it breaks unsupported third party software is hardly something Apple would go out of their way to do.
Let's not be disingenuous; doing that concedes the point that breaking Pre's unlicensed, unauthorized iTunes connector was wrong. Apple is clearly going to keep breaking the Pre, and they're doing it on purpose.
Yes, but iPhone syncing has the potential to transfer email account information, including passwords, making it a security hole for untrusted devices to be able to do it.
In either case, while breaking Pre interoperability was likely intentional (and we've discussed this to death in other threads), Apple doesn't give a shit about gtkpod.
