It can, and does make challenging TV, which other commercial stations can’t/don’t/won’t. Take, for example, any of the Adam Curtis documentaries.
Or, quite frankly, the latest Torchwood.
I cannot see any of the commercial channels trying a five parter-in-one week. It’s only because the Beeb is free of commercial pressure that they can indulge themselves and us, in it.
Reasons Not To Top-Slice #6: “Could Doctor Who exist without the BBC?”July 14, 2009