Appfog Takes On Amazon Lock-In With OpenStack

I feel Amazons lock-in is further reaching then just switching providers. As plenty of vendor applications (PaaSs) have latency issues outside of ec2.<p>That said, OpenStack itself is pretty awesome.

I don't understand how AWS services keep being described as 'lock-in'. Shouldn't this post be titled: Appfog Offers Alternative to AWS With OpenStack?