In Finland I see the opposite problem. Traditional calling is dead, so there is absolutely no competition on international calls.

National calls and calls to nordic and Baltic countries are typically included in the subscription. But once you have to call to let's say central Europe per minute rates are exorbitant compared to today's data volume pricing.

Looks expensive. What about the regular phone plans? For instance, the plan I use currently in Japan has high per-minute or per-SMS charges for international numbers. The trade-off, of course, is that it's dirt cheap as long as you don't call international numbers, and basically just use it for mobile data. In a place where everyone uses LINE for communication, this works well.