Satellite-based internet and cell services aren't competing in the same space as your regular cell carrier. They aren't going to make your phone plan cheaper.
train : plane :: land line : cell phone :: terrestrial : satellite
The transition won't be instant and there will still be a place for terrestrial cell service for a long time, but the future favors flexibility and ubiquity.
The big challenge/opportunity will come when a non-US player arrives, like Thuraya after Iridium and the NSA can't slurp down all telephony.
Time doesn't really have anything to do with it. You are fighting the basic laws of physics. For example 4G/5G home internet has been around for many years. Has it made your Comcast bill any cheaper?
