Actually you are correct it's not Zero. It's negative. If your claim were true, no one would clean the crapware off their windows machines. With respect to tv channels extra channels impose poorer usability for the on screen guides, and degrade a simple channel surfing experience.

(Note I'm not claiming the bundling prevents purchase, just that there is an economic opportunity in non-bundled alternatives, such as Windows boxes without crapware, or solving the problem of a clogged experience due to poor bundling such as Netflix's focus on surfacing desirable content.)