Most internet connections in the US cannot carry even 1 full HD stream and carriers like ATT are trying to downgrade even that. I've got GPON with a 1 GB symmetric link but my CIR for internet is 300Mb/s, I can burst the remainder If I'm not doing IPTV so up to 700 Mb/S downlink is reserved for voice/IPTV.
What I can see happening is a 'BASIC' package and a BASIC PLUS package which will have ESPN and similar channels, I think the days of Disney being able to 'force' it's content to every subscriber are more or less dead along with Viacom although Viacom has pursued a strategy of low cost channels so they are more likely to wind up in the new 'basic' package.
I envision the the BASIC package as being local channels, news, weather and regional networks and a smattering of 'cheap' channels not to mention shopping and religious channels which are effectively free to the carriers, The basic PLUS will be something like today's basic package.