In the UK at least, it's Sky (satellite) or Virgin (cable), and they both bundle internet access with the service. Often it's more expensive to get the internet service on its own (Virgin) than getting the 'bundle' (tv+internet).
Also, the free-to-air reception in some parts of the UK is still so poor, you need cable or satellite to watch any TV at all.
On the FTA point, Freesat is the satellite equivalent of Freeview and needs no subscription. Many TVs have Freesat tuners built in so you just need the dish.
Also, the free-to-air reception in some parts of the UK is still so poor, you need cable or satellite to watch any TV at all.