I wish you could.
1. FNC provides X value to Comcast, Fox therefore wants to extract as close to X as possible for FNC from Comcast
2. FS1 and FS2 provide X-Y value to Comcast, Fox therefore wants to extract as close to (X-Y) as possible for FS1 and FS2 from Comcast
3. Therefore, the maximum that Fox can extract from Comcast for all the channels is X+(X-Y)
Let's add some numbers here
X = $2 billion
Y= $1.95 billion
Therefore X-Y = $50 million
Do you understand how threatening to pull FNC will never, ever ever ever, allow them to extract more than $2 billion for it?
Only in your absurd example which doesn't actually result in anything that happens in the real world.
If they are demanding to pull FNC unless Comcast pays them more than $50 million for FS1 and FS2 (let's say $100 million), they only way possible this could ever work is if the amount they are demanding for FNC is less than $1.95 billion on its own?
*slams head into the desk*
But why would they do that? Why wouldn't they just extract $2 billion from FNC and $50 million from FS1 and FS2, and threaten to pull each channel individually?
It is like you think your hypothetical (putting it nicely) is somehow more relevant than what has actually happened. It explains how right-wingers continue to think as they do because their think their analogies and misunderstandings supercede actual events.
They are threatening to withhold FNC. The value in doing that is to make subscribers leave Dish. So Dish has to weigh the possibility of losing subscriber base because Fox is withholding a channel in order to gain higher rates for two unrelated channels. You are whining about how they wouldn't do that when several companies have already done exactly that!