TV is in a new era, and I am not certain Sky is actually there yet.
Perhaps the GoT/Homeland syndrome (others can debate what started it) but all of a sudden TV in the US became sexy.
Before that, it was the Beeb that primarily led the World in creating great drama (of course ITV pitched in with many crackers) while the US was chugging out Knight Rider and Baywatch 
But in the new world, HBO is king. No idea how that happened, in fact some TV stuff makes Big Budget movies seem rubbish (and TV is in fact now rushing to create shows based on old movies). Of course others like Fox, NBC and even SyFy are putting out quality shows.
Which is great but the CHANGE is how these shows reach GLOBAL audiences. TV is now truly global, Star across Asia, OSN over here plus of course Sky have hours of programming to fill and so the key now is about buying the best CONTENT.
The BBC has, to be honest missed that dynamic. Probably because of the way it’s charter is protected, it had always seemed almost apologetic when one of it’s shows EARNED money being shown abroad - as in Top Gear for example.
The Luvvies don’t (or maybe didn’t) like the idea that money could be made, and so over here I get to watch 3 year old repeats of David Tennant as Doctor Who, or Bruce on Strictly without a wig, when I would happily pay an extra fiver a month to watch more current stuff. But no, selling is dirty.
So you little Englanders make shows like Luther and Sherlock and hoarde them until they are out of date before slipping them un-noticed into late night slots on BBC Entertainment. 
My point being that the BBC needs to move with the times, by all means make programmes for you lot, BUT get them onto a global platform MUCH quicker, and for the money they are worth. Just because you lot do NOT have competition on Satellite Broadcasters doesn’t mean other parts of the world don’t. Bouquet providers bid ZILLIONS and fight each other for the rights to show Football, and that same market exists for SHOWS. Not zillions but easily enough world wide revenue to pay for the next series. The world NEEDS CONTENT!
There is a hybrid model the BBC needs to use. It is POSSIBLE that the 1st February this year will see that change with the launch of BBC FIRST Worldwide.
So to sum up, there is a bandwagon that will PAY for what the BBC makes (NOT you lot) and it should NOT hurt it’s charter. IMHO they need to stop being scared and move. Fast.
Because your streaming market is miniscule - it is minute. Even the market Murdoch addresses in the UK is pitiful.
The GLOBAL Streaming market is worth billions. Stop being so parochial. Keep the licence and let English Speaking people in China, Africa, America etc PAY FOR THE BBC on your behalf.
(But FFS don’t let them sell Eastenders)