Was the Sprint BOD waiting until critical mass on the Metro Pcs 4G LTE rollout?
Currently PCS has 8% of it's 9.4 Million customers on 4G. It will surely exceed 10% within weeks or maybe a couple months. At that point Hockey Stick adoption takes place (over 10% adoption) and growth accelerates.
They have proven to be quite profitable with acceleration on the very very near horizon.