They both used fairly, ehm, 'unusual' marketing tactics to divide and hook people, based on petty ignorant and intollerant social-economic-pseudo religious differences. Whilst the owners got rich and drank laughing with each other after the 100,000 crowds rocked up to the gates, the divisions cemented into west of scotland society and it became 'more than a game' to lots of very very daft people. It spiralled out of control from the 70's onward, in the mid-to-late eighties (when I was teenager) it was brutal, the crap I sang in the name of a football club shocks me now. The city was a powder keg then. The rise of champions league focused the clubs on stamping out the vociferous elements, Celtic I'd say were more successful in this earlier on, but Rangers made strides also after getting skelped by UEFA a few times - the more chimp-like behaviour is contained to away support these days in both crowds.
For the shouts of bigotry this and bigotry that, it's so tame these days compared to what I seen, but still simmering under the surface - but until such time as both clubs fans can display a songbook that is primarily about football, and not their 'traditions' they have no place in the epl or anywhere else.
Having said that, if SKY want it SKY will get it. Personally I don't think SKY want it - more hassle than it's worth, league would need to expand as turkeys don't vote for chistmas, champions league places might need to expand (thats something I think will happen anyway, 'cause 6 into 4 don't go at the moment)
I don't generally add to rangers celtic threads, no place on a city forum in my opinion. I'd rather the mods just had a dedicated locked thread and added each and evrry rangers celtic thread as soon it is noticed. Hopefully they will stop appearing then.