But these countries with sensible data plans also tend to have a smaller population.* In many cases, copyright owners charge a separate fee to license music for each territory. Even when the royalty structure doesn't have a minimum annual payment to deter small-time players, the legal costs of negotiating with a copyright owner's representative in each territory add up. I don't see how serving somewhere like Europe would necessarily scale the way it does in countries with hundreds of millions of people like USA.
* I didn't say density; I said population.