Hi there, Nicholas,
I would not advise your firm to acquire a satellite connection as long as there is coverage of DSL or broadband (wireless or not).
VSAT costs a lot, normally has below average latency, and is very weather-dependent.
First of all, you have to consider the speed. If you are aiming for 4+GBPS connection with VSAT, I would advise you to look at other possibilities such as high-speed E3/T1 connections, fiber optics, or private DSL lines. VSAT (as far as I know) only carries bandwidth of somewhere below 1GBPS.
Corporate business firms such as media and telecommunications offices use wired T1 connections. VSAT is very costly, and when there are storms, you will experience VERY LONG downtimes.
I have worked for a couple of firms that used VSAT, and both were tolerable. Yes, they work smooth and fast, yes, they can cover even the remotest areas, and yes, they are powerful: but the bottomline is -- unless there is no DSL/Broadband, or unless you are in a very remote area, do not use VSAT.
Side note: Where T1 connections would normally require high-speed server racks (takes up a room at the most); VSAT requires a big 14-foot satellite dish to be installed on your company's rooftop, and a huge transceiver deck, a cabinet, and a server rack.
Hope it helps,
~Francis