[citation][nom]Peter_V[/nom]I think that locking it down is a defensive strategy and allows them to not take heat from apps that are potentially malicious being installed. They can always say "Hey, we tried to protect you, so don't blame us for what happened."[/citation]
That would be true, but look at Apple's App Store. One can find malicious apps even in that legitimate source, so that is NOT a guarantee.
Bottom line is, let the consumer decide what they want to put on their device. If they want to take chances, up to them. If not, give them the information and let them take action (or not).