York is within range for Bilsdale, Emley Moor, and Belmont, but the set-up of aerials varies even between adjacent houses, so even if we wanted to go through the exercise of turning aerials for the duration it wouldn't work in many cases. In my own case the neighbouring properties aere mostly set up for Emley Moor, but for me the sight-line in that direction is blocked by a substantial stone building, taller than my house and just a few feet away, whereas there is a clear line towards Bilsdale. That's why the (modern) aerial installation chose that transmitter (which in normal circumstances suits me very well: I'd far rather get the real northern coverage rather than concentration on Leeds/Bradford). I don't think Belmont was considered here, but I suspect the tall intervening building question would arise for that one too.Many if not most people in York can also receive Freeview from Emley Moor or Belmont. But that would typically mean turning the aerial around which for most people means paying someone to get up on the roof. Many if not most people will be using old cabling or aerials from before digital switchover. The quality of the cables and aerial may be good enough for Bilsdale as it is the strongest signal but these items might need replacing if people decided to switch to weaker signals. If you are going to do that then you might as well get a satellite dish.
You're right that if one were going to have to pay someone to get up on the roof to turn the aerial (and then come back eventually to do it again), then one might as well get a satellite dish. Others are also of course right that you can watch TV on line. However, sitting at one's desk in front of a PC is not an ideal way of "enjoying" one's entertainment, and tablets and mobile phones limit one to have to hold the thing all the time and view on a very small screen—also, it seems one can't Chromecast live TV to s full-size set in the case of a number of the broadcasters. And there's no cable here, so that isn't an option.