Streaming is really doing to cable what Amazon Prime (et al) is about to do to brick and mortar. It will come fast once it hits critical mass.
The only hitch will be the availability of Internet service. Some people are still limited to Cable for their Internet service. Most people won't touch satellite for Internet. And as long as Comcast et al own the wire, the cost for Internet only service is going to continue rising. What's needed as the next step is serious competition for Internet services, whether by coax, fiber optic, wireless, etc.