I went 100% data something like 10 years ago. Then Comcast called me up and said "hey, we'll throw in basic cable for $5/month more", so I said "fine" and took it. We didn't watch much - the kids watched Disney Channel when they were much younger but that was about it.
Then I moved and went back to a data-only plan, which went from $50/month to $70/month for some reason, I think because it got faster.
Anyway, fast forward two years and last month Comcast called me up and said "hey, for another penny each month we'll throw in basic cable plus a premium channel *and* take you up to 300Mb/sec". I said "Sounds good, I don't need the cable". Long story short, they literally wouldn't upgrade my cable speed until I'd connected the stupid cable box to my tv and turned it on.
The only good to come of it (besides the ass-kicking speed) is that when it started crapping they sent a tech out who finally figured out what I'd been telling them for two years - there's a problem in the wiring between my house and their office.
Anyway, the point is that they would not increase my speed without forcing me to get cable. At least I'll be able to get netflix on the comcast box thing soon, although I also need amazon prime and youtube to get even close to replacing a roku.