"The coming decades..." is a long time and I think it's impossible to predict anything in the area of technology that far into the future. To attempt to do so is arrogant.
I chose decades because that is probably how long it will take
every network to take down their satellite uplinks and distribute themselves via fiber only and for satellite distribution to be completely dead. I expect to see some doing this over the next few years.
You over-estimate the ability of pizza companies to satisfy everybody.
I didn't say they were satisfying everybody. But they sure are satisfying a whole lot more people than C Band subscriptions are going to.
For a very long time, there will be huge areas of the country where high-speed Internet streaming is not available. It is extremely expensive to justify optical fibre installations in low-density areas of population. Even cable TV has not hit those areas yet. Those areas will continue to be served by satellite TV for a long time.
Like I said, it will probably be
decades before there is enough fiber, cable, and high speed wireless distributing to cover all the very rural areas enough for satellite multichannel video services like DirecTV and Dish Network to be completely phased out. Paid satellite TV will continue to serve those areas for years to come, but it sure won't be C Band which is what this thread is about. C Band is dead for the home consumer and on its way out for the commercial operations.
Verizon FiOS is a great example of what can be accomplished via fiber backbone infrastructure in America today. Verizon uses just one Super Head-end in Florida equipped with big satellite dishes to receive all the network feeds they distribute to their FiOS TV subscribers (they have a backup installation in Illinois). They have markets in California, Texas, Florida and New York. Wide swaths of the country. Anyways, Verizon sends every channel from this one satellite receiving installation across the nation completely via fiber.