I’m not trying to be facetious I honestly appreciate someone responding, but I don’t see how that single statement is a rebuttal to a multi faceted case that I made in my comment.

I’m actually not sure where I imply they have spare capacity, but if you mean in reference to the zero-rating hypothetical (ie. they have spare capacity if they use zero rating to fill it) the idea is the data usage of the services is several orders of magnitude above what normal data usage is, and with zero rating there’s often a trade off, like reduced resolution on video. They could decrease the price of the data, but not enough to make the full quality usages economical for most people.