That's a great point you make. Now that SkyGo can be chromecast to the big screen...perhaps traditional satellite packages will now be more attractive than I anticipated.
You could hand back your MySky and just have the 'dumb decoder' for free. That decoder will still allow you to browse the OnDemand catelogue if you connect it to the internet.
To get a number of the MySky-type features you could always log into your SkyGo now and cast it to the big screen.
Also, people paying for multi-room will probably hand back the extra decoder in the bedroom as they can just cast their SkyGo.
So paying the $58ish bucks a month for Starter + Sport is still good if you watch some of the other starter channels. Plus it gives you truly 'live' sport (Sky Sport NOW is delayed about about 30 seconds or so I think).
But will MySky customers consider this and make the savings?
I still think if you watch a lot of sport and just want the Sport content then a $39.99 Sky Sport NOW sub is the way to go.