I'm a digital signage guy and don't understand satellites, but
Digital Signage Talk has a big
post that makes me think maybe I better learn.
Satellite networks that go all over the world sound like an interesting alternative to internet distribtution of digital signage content.
Don't know if you're aware that there's now free digital signage software available. Maybe that'll help with your profit margins.
Its on www.digitalrecall.com.au