The best stratellites will only be able to cover a ground area with a 200 mile diameter.
Did you forget that a stratellite could see farther if the earth were flat?
I got that information from a company that manufactures a stratellite, it is not based on estimations, it is based on testing. 200 mile diameter is the maximum possible distance assuming there are no other obstacles (mountains) in the way.
Let me put it this way, SpaceX is offering their service for anywhere between 8 - 11 million. It would cost them FAR more than that to fake the launch and instead put up hundreds if not more stratellites (each twice as large as a blue wale) to give the same coverage. Where did you get 50 thousand from?
These guys were able to make a stratellite and send it up to look down at the circular spotlight of the sun for less than a couple hundred dollars: http://www.natrium42.com/halo/flight2/
That balloon is not designed for prolonged flight, if you read about stratellites, one of the biggest design obstacles is the fact that in order to exist in such low pressure without exploding, in addition, their electronics and flight systems have to withstand very low temperatures for an extended period of time. They have to be large, lightweight, and very strong. Right now they are about twice the size of a blue wale.
They also have to have sophisticated navigation systems that will keep it constantly over the same geographic location, allow for remote landings, takeoffs and maneuvers. Similar to what you might find in a predator, which itself cost several million dollars.
You are trying to make this sound simple, but it is not. Companies that are developing this technology are having all kinds of problems with them, one of the big problems is COST.
So once again, in order to fake what 2 satellites are capable of doing, SpaceX would have to have at least 2 multimillion dollar stratellites for every 200 diameter circular area in the US, one would have to be airborne at any given time. That is a lot of fucking ships. We are talking thousands of employees for maintinence crews, developers that can get PROPRIETARY software to work with their current hardware (it will not be compatible with the satellite hardware they put up). As well as many different factories to make these contraptions.
The only thing I will say is one stratellite will cost less than launching one satellite, but not by much. In the long run, due to maintenance, the strats will cost far more.
No way they can do all that and make profit if they are only charging 8 - 11 million for a flight. Sorry Tom.