OK, let's face it, after decades, Internet TV is still crap.
2) Freeview - for their TV service, you have to retune it every ten minutes or so, the online guide crashes the whole time, the reception is awful. No online service at all.. Their iOS programming app crashes more often than it works. It's not surprising that more than half of all Brits pay for the TV they could be getting for free.
3) BT Sport - click, then click then click again, after around a lifetime you will get to view a live feed. This is the worst designed website I've EVER encountered.
4) Sky - not supportng HDMI is just sad, having to right click and approve Silverlight every time is a pain. The online UI is just dreadful and nearly unusable. It's very old and very sad. Also, one app for listings and a separate app for viewing. Why?
5) S4C - the Welsh language channel has a site where even the website links don't work in Chrome. Click and click and nothing happens. Dreadful image quality. Amateur night.
Online TV in the UK is still ahead of most other countries, but if actual TV was this unfriendly to use there would be a riot. After two decades, Internet TV is still a dreadful experience that delivers less than traditional TV, not more, as it should.