zlacker

They're trying to control malware. Tying apps that may be malicious to an identity that takes some degree of cost and effort to establish seems sensible in that light.

It's not that the identity prevents malware/abuse, but publishing any malware to the store burns the identity and establishing another is harder than simply coming up with a new email address. It's not necessarily the best scheme out of there, but it makes sense given their apparent goal.