"Give me Netflix, HBO and Starz over the BBC any day."
You do realise they are cherry picking what they think is the best of TV, don't you? And just because they happen to buy or commission stuff you currently like doesn't mean that everyone likes what they do or even that you will still like what they next year or the year after.
I had a Netflix subscription, a 3 month freebie. I'd seen everything I was interested in the first 2 months (as had my wife, with different tastes to me) and barely looked at it in month three as we realised there was very little new stuff appearing. Assuming I get get a month by month subscription and not be tied to a 12 month contract, I may look again in a year or so.