[Neil Jones]

OTOH, Sky knows that a lot of their TV customers don't (or won't) take Sky broadband, and it makes sense to them to open it up. I'm sure they try to push a bundle deal very hard at sign up though.

When Sky on Demand first came round it was only available to Sky customers. That was eventually dropped.

But on the other hand, when it was just Sky TV and internet was only available via dial-up, Sky didn't do this (being TV only at the time), and they only entered that market by buying somebody else when broadband became a thing in the early/mid 2000's.

Probably safe to say the company they bought did do dial-up before Sky came along, under the model that Freeserve premiered in 1998 that eventually saw the end of the Compuserve and AOL way of internet access.