It will cost broadcasters a metric f*ckton to upgrade the satellite networks (studio headend kit, the satellites above earth, and your set top box) before 4k starts happening much of any at all beyond the odd demo channel. 4k needs bandwidth, lots of it, unless you’re happy with it looking like a turd. And network upgrade is not even on their radar AFAIK.
Itll cost a bit but not as much as your guessing, the biggest problem for us is getting the content to the customers. The Satellite “networks” will not need upgrading, just the compression used and with HEVC compression its possible to put a UHD channel within a current Satellite transponder (there is a test channel up there now by Eutelsat). The Studios will also just need tweaking, we have proved and tested this, its just the current solution (quad 3G SDI) is a real pain in the ass to do.
The bandwidth is a problem but the situation is getting better. I’ve tested contribution delivery bit rates of UHD content over satellite and fibre, our bit rates are up to 300mbps and we can do this fine. Its again getting it back to the customer, Netfliks 18Mbps UHD content is shocking and makes me laugh. To stream over the net you will need rates up to 30mbps for it to look half decent.
The reason broadcasters are not jumping on it is because the future is uncertain. UHD-1 in its first phase is not a game changer, ive watched Football, Golf, Tennis and Formula 1 and come away unimpressed as do alot of my colleagues. UHD Phase 1.5 is what is really needed, this brings HDR, frames rates up to 120fps (really needed imo) and higher colour gamut. The UHD content will be much more of an immersive expereince then. We also have the big issue of viewing distance, viewing distance is critical. We are on the edge of what are eyes can see, its a fine line between being able to see the detail and missing it completely. You need to sit closer to the screen than you would a normal HD tv or you need to buy a larger tv. Most people are not going to move their sofas, most European homes don’t have the room to accommodate a 60″ plus tv in the living room.