So what is going on ?
Every communication network is or is already moving to an IP-based solution.
For example 4G/LTE Advanced is also IP-based. Most TV is now digital. Although, at least in my country analog still exists.
That doesn't mean it's not on a separate network. Separate from the Internet. So it isn't like we all depends on the same network. The problem is more than 90% of a wireless network is actually wired. And they might end up in the same fiber trench.
We used to have only one bidirectional network, POTS (TV and radio are only one direction).
Now most people have 2 bidirectional networks: mobile and wired Internet.
The problem is POTS is powered by the network.
And lots of wired Internet connection don't have a battery back up. And smartphone battery life sucks.
Can we life with these disadvantages ? I guess we'll find out.