A small problem with the lack of FE space travel is that it would cost a lot of money for NASA to keep faking it. Where people see NASA (or one of the other many agencies) launching a satellite, the group launching it is in reality not only paying for the materials and construction of the rocket, but also some kind of rapid recovery system to move the payload out of the way of the planet so it doesn't fall back to Earth, and an elaborate fleet of stratellites that will need plenty of maintenance and possibly fuel. Probes and observation satellites require mountains of fake images, possibly made to order in a matter of hours along with some kind of stratellite if the device is visible to average people (for example the HST). Each shuttle launch costs NASA twice the price, as the shuttle has to land somewhere and take off again for the return trip, if sustained space flight is impossible. And if it's carrying a satellite, then they'll have to put up a stratellite to represent it as well.
I really doubt the conspiracy is going to be making any money at all, you know.