UK operator Sky has historically been ahead of the curve when it comes to embracing online video, and it has taken this to the next level this week with the announcement that it will be offering all 270 of its TV channels over broadband in its next generation Sky Q box – doing away with satellite dishes altogether by 2018. Over in the US, AT&T’s DirecTV Now launch has dominated the headlines over the past few months, but Sky in Europe is a comparable size to AT&T (in video) in the US, and is going further than the US operator has so far dared. Even with the launch of its new streaming service, DirecTV still wants to hold on tightly…