Yeah i can never understand why they don't license for worldwide, i think Top Gear earned the BBC quite a bit of revenue from streaming in other countries, seems a bit daft to not tap on that revenue stream.
Depends on people's viewing choices i guess. We watch a bit of live TV as well as catch-up/on-demand, we've currently got Netflix, Amazon Prime and the misses pays for HayU, on top of that we pay for Virgin Media as we have no aerial in the flat for Freeview, and with that we get suckered in to paying for a TV License. We don't actually watch that much TV of an evening, probably works out to be 5-10 hours of a 7-day week, and some of that will just be background watching.
Don't get me wrong there's some great shows i've watched on Netflix/Prime, but unless you're watching 30+ hours a week, on-demand subscriptions can seem pretty expensive.