That is an interesting characterization of the situation. I would be more inclined to agree with you about X denying something to Y if Y had asked for it in the first place. However, in this case, I have heard Zuck himself saying numerous times that one issue with poorer countries is that they don't really know what internet is and they don't feel the need to pay to use it in the first place. It is hard to portray that as denial of connectivity to a certain set of people. They never asked for it. This is probably a bad analogy, but I see it more like a drug dealer luring away users for free, and some public organizations trying to ban that behavior.
Suggesting it's ok to deny someone access to the Internet because they don't know what it has roughly the same moral weight as denying someone access to antibiotics because they don't know what they are.