They don't need to be well funded to go out and gather some quite simple data. For example, with a consumer grade camera you can document the locations of these satellites. Here is a list of such satellites
(may not be complete). You can point a camera at the celestial equator and take a long exposure photo. The stars will form 'star trails' but there will be a few dots that remain fixed. Those are geostationary satellites.
There's actually a cool demonstration in that gif. You will notice that most of the stationary dots in the frame form a line. This is the celestial equator. There are a couple, however, orbiting off that line. These are satellites orbiting at some inclination to the equator, and therefore are not geostationary
, but instead are geosynchronous
. They orbit in sync
with a given longitudinal line on the moving surface of the earth, but they move north-to-south over the course of each orbit. Several examples are visible in this image. Find Alphasat, in white text on the left and positioned below Eutelsat 25B. Unlike the conga line of the other satellites, Alphasat is A) not in line, and B) obviously moves upwards (north) across the frame. Move to the right a little bit and find Eutelsat 16C, black text. It moves down (south) but not very much, you have to look closely. Find Astra 2D, black text right of center, about 1/3 in from the right side of the frame. This one makes a visible shift downward (south) in the frame. There's another, unidentified satellite that begins near the "0" at the end of the Meteostat 10 label. It also moves south over the course of the gif.