Not defending subscriptions, but it's not just data. You need developers for your apps, you need servers, the service needs to be secure, etc. On the data side, as soon you have data, other services also start working, like live traffic info and so on.
Again, not defending these expensive subscriptions, just pointing out that it probably costs more than 10c a month per car to keep all that stuff running.
Eh. Consider the sheer volume of vehicles Mazda for example sells globally. Even at a dollar per unit the gap would more than make up for that.
Plus, a cellular connection provides direct customer information that Mazda or whoever now no longer have to pay for in terms of market research. They can now just know the usage of their vehicles and tie that in with whatever data sources they want to.
Again, not defending these expensive subscriptions, just pointing out that it probably costs more than 10c a month per car to keep all that stuff running.