If I were in your block I would be one of those who would not be interested to have Foxtel but I would probably not object to the installation making it possible for owners to connect to it. If a special resolution is passed to install the necessary equipment on common property then it will be a cost to all. I would see this as similar to the situation we have where I live. I do not often use the BBQ equipment and my kids have got to big for the playground and I don’t use the tennis court but these features add to the value of everyone’s units so I have nothing to complain about when money is spent on such community facilities. If, a substantial majority in your block decide they want to have Foxtel equipment on common property either so that they can subscribe or just to know their unit value is increased by the possibility or they don’t want to deny this amenity to their neighbours, then the minority will just have to go along with that.
If you have 3 of 8 who would vote no on Foxtel, then you don’t have the necessary special resolution. Perhaps you can do some horse trading to everyone’s benefit. Are there some other shared facilities you could have that might appeal to different groupings? Perhaps you can bundle these together as a proposal to upgrade shared facilities generally with nearly everyone getting something that would appeal directly and all getting increased unit values.