The FET view is clearly based on a conspiracy. But how many people really know the truth ? I can't imagine that the thousands of people that work on satellite don't know that the things they are building doesn't exist...
Every world government with a space program would need to be lying, lets say a million people all together that would be involved or have to handle the evidence that needs to be hidden.
Every airline would need to be in on it, along with every airline manufacturer and every airport authority/operator, due to the fact airplanes would need to either fly faster, due circles or other odd things to maintain the "lie" of the round earth, call it another million people.
Every scientist would need to be lying, there are roughly 8 million of them.
Every satellite company for TV, GPS and internet would be lying, call it another million people.
Every cell phone company would be lying, call it a million for all the world, but also every agency that has to inspect and regulate them and their activities would have to be lying, so another million.
Every shipping company would be lying, due again to distance between objects being one thing on a round earth and another on a flat earth, so they must be lying about their travel time, and all relative people that handle that information, the people working the boats, and ports and all that good stuff, plus of course the fact they use GPS to navigate. Call it another million for arguments sake.
We can keep going, but at 14 million people already we can see that keeping "the secret" becomes pretty damned unlikely, especially over the couple hundred years that a round earth model has been accepted as standard. /shrug