This stuff is very common for "second-class" countries. It's happening all the time with all kinds of services. Most of them just don't want to be bothered (spend resources on) with figuring out how to work with those countries. I guess the payment systems provide convenient frameworks for them via which they do money related stuff. If there's no easy way to reproduce something in several unfortunate countries that was super easy to achieve in developed countries, then it's not worth it. The profits there are not gonna meet the expectations in relation to the spendings.
So while these are really shitty situations for people from those countries, these decisions are dictated by the market. And I don't think this is gonna change.
But one of the great points in the article is that services should be very clear, up to date and explicit about their policies.