Poor people have poor choices
I think it's easy to see how many poorer people will shift to mobile data exclusively. The shift to smartphones is nearly universal and having a phone is important to live in today's society. It's cheaper to up ones data plan on the phone than to have a phone bill AND an internet/TV bill.
For consumers, a digital life that is all wireless and mobile devices will work. As a creator, I need the bandwidth that cable can provide and a real keyboard and mouse. There are many more consumers than creators so it's unsurprising that wired internet providers may see their subscriber numbers drop. The same holds for satellite internet providers. It's wireless, but the kit would be unwieldy to move around.
If TV moves from SD/HD to 4k, cellular wireless won't be able to cope with the load. I'm surprised to see people streaming HD content to their 6" screen thinking it a waste of bandwidth. At some point wireless companies may need to rein in their data allowances once again to keep from having to deploy many more towers in larger cities where the cost to lease the space will get stupid really fast.
Cable companies may have to start going ala carte. While ESPN may be demanding $6/subscriber now, there is no way that they can raise that to $20/subscriber. They will have to figure out a way to survive at $1-$2 with fewer viewers or lose out to an organization that can. Lots of channels will die, but I don't see that as a bad thing. There used to be some really good stuff on the telly, but now it seems most of those channels have gone to cheap-to-produce reality shows that are all just a crowd of pinheads shouting obscenities at each other. Cooking shows have gone to bizarre extremes too where there is less cooking and more forcing the other chef to try and cook with their pans cut in half or other obstacle. Allowing customers to choose the channels that are most important to them will let the market place vote on what's important and what's not.
It will always be possible to push more data down a wire than over the air. It's also more secure to be wired.