adamj: Well that is dumb. Means you have to have two decoders to get all the channel coming off 1 satellite. Also, if you had Sky Multiroom as well would the LNB's on the Sky satellites be able to feed 3+ decoders or would I have to have an array of dishes on my roof depending on how many decoders I have in the house?
If you wanted to get all the tv channels coming off the satellite you would need a bigger dish and several set top boxes. The Optus D1 satellite is used for SKY TV NZ, Freeview, SBS Australia, ABC Australiaand others ( http://www.lyngsat.com/optusd1.html ) some of these are free to air, some of them encrypted.
SKY TV and Freeview are competing against each other, sort of. It is quite feasible that TV1 and TV2 could be dropped from the SKY broadcast if the agreements between SKY and TVNZ expired... Same with TV3/C4... Once upon a time you weren't able to get any of these four channels through sky digital - you had to rely on VHF broadcasts.
SKY have not allowed the broadcast of their free-to-air channel "Prime" via the freeview boxes so why should Freeview allow SKY to rebroadcast any of their additional channels?