This weakens the argument for the fiber-optic revolution. Even if telephone companies can offer channels at a cheaper price, the installation fee might mitigate some of that benefit.

Customers generally won’t lose out on any of their favorite programs if they switch to fiber-optic, they’ll simply get more choices for the same price. This strengthens the idea that fiber-optic will be the preferred option.

If we assume that cable companies won't raise prices, this seems to weaken the author’s argument. If cable companies do raise prices, then it makes no difference to the argument—fiber still wins on price-per-channel.

This is irrelevant, because cable services and phone services operating in different areas aren't in competition. There's no reason that this would affect pricing or services offered.

This if anything weakens the author’s argument: some people’s favorite shows might be regulated out of existence on the fiber-optic services.