Why is positive grounded in telecomunication?

telecommunication is very urgent in every fields , The banking system and the medical system and Contracting and every things

for example if big company should take work  site  in far away place ,   and no internet  and no connection and what they should do ..?

they can take  (V SAT) solution  it is a hardware device connected with the satellite any where ...?

so it is very useful to the company and make more benefits