Surely it costs more than that to run the internet connection as well. I know they choose to do that for other features and probably get good network deals, but the cost is tangible and I would be surprised if it worked out long term.
The hardest part is managing providers across multiple countries, if you want, for example, connectivity in Kazakhstan you either use a super expensive provider that supports a lot of countries, or you have to set up and manage separate contracts with providers in Kazakhstan.
However if you care only about a one or two markets and cars are often already built inside that market...
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