It's unfortunate for users, rational beings who, having spent several hundred/thousand dollars on pro applications, can generally expect not to be served malware. I don't really need Apple's assistance to ensure that Ableton doesn't sell me a trojan. If they do, I have my lawyer's number in my phone, we know who to sue, we've got it covered. It's unfortunate that the way the rules are currently written, no pro media application will be able to take advantage of iCloud functionality…except of course the ones that Apple sells.
I don't care who Apple trusts. And if the answer to "Who does Apple trust?" is "No one but Apple," that says more negative things about Apple than it does about the tens of thousands of software developers, large and small, who aren't Apple.
Are you dense? It's unfortunate for users, rational beings who, having spent several hundred/thousand dollars on pro applications, can generally expect not to be served malware. I don't really need Apple's assistance to ensure that Ableton doesn't sell me a trojan.
You might be dense. Who said it's only for trojans? I wrote "to reduce the damage a badly written or mal-intended application can do to a system".
Sandboxing is not only about malware. If, for example, Live has a bug that eats your home directory, it won't have its day under sandboxing.
And who said anything different will happen to Live or anything? It's not in the App Store, and you will STILL be able to run it. The change is for App Store applications.
Unfortunately, it appears this may be a "do as I say, not as I do" situation.