MacRumors reports on an article about iCloud suffering from "Deep Organizational Issues". I've had my own set of problems with iCloud as of late but based on everything I've experienced with Apple, including just a tiny bit of the inside, I don't think the iCloud stumbles have been a result of untamed bureaucracy or anything organizational. Everyone I've ever dealt with from Apple is incredibly focussed.
If I had to bet a nickel, I'd say the problem is that cloud stuff between multiple platforms (even platforms you own) is really, really hard. Dropbox and Twitter started small and got big slowly and they had plenty of growing pains along the way. When Apple releases a new cloud service, it immediately has millions of users. Apple still needs to prove they can deliver the goods in the cloud, but I have a hard time believing their cloud-challenges are organizational issues.