Then add another level as you're not being sold service by Spectrum but Spectrum of New York, and variable tax/fee contributions depend on total revenue of that subsidiary (e.g. Universal Service Fund[1]).
It can be fairly complicated in a static state, but then add in new/pending legislature and it's something that needs to be updated monthly.
Yes, they already do that work internally (and if they get it wrong, the government taxing entities tell them they are miscalculating the amount and assesses penalties and fees) but publishing it adds a new dimension.
1: https://sourceadvisors.com/blogs/salt/what-is-the-federal-un....