How much of this is due to in places with cheap wireless offering zero rating won't be as effective at attracting customers as it would be in a place with expensive wireless, hence you are more likely to see it offered in places with expensive wireless?
For instance, T-Mobile's "Music Freedom" zero-rates a whole bunch of music streaming services. In the US, where data is expensive, that could easily cause someone to pick T-Mobile over one of the other providers, if they listen to a lot of music. With "Music Choice" I can get by on the smallest data plan. Without it, I'd have to step up, maybe even to unlimited.
In a country where data is cheap, something like "Music Freedom" wouldn't make much difference, and so I could see less ISPs bothering with the technical and administrative overhead of having such a program.
For instance, T-Mobile's "Music Freedom" zero-rates a whole bunch of music streaming services. In the US, where data is expensive, that could easily cause someone to pick T-Mobile over one of the other providers, if they listen to a lot of music. With "Music Choice" I can get by on the smallest data plan. Without it, I'd have to step up, maybe even to unlimited.
In a country where data is cheap, something like "Music Freedom" wouldn't make much difference, and so I could see less ISPs bothering with the technical and administrative overhead of having such a program.