Why on Earth should I drive around carrying an inert device that's held to ransom? I would pivot on my heel and walk out of the showroom laughing if I was told this by a salesman.
We're getting to the point where a lot of cars that could be called "classic" still have the modern safety features without all of the connected bs. Most late 90s-early 2000s cars have multiple airbags, crumple zones, active seatbelts etc. without also needing to have subscriptions, telemetry, or really any connectedness at all.
Granted, subscription-based safety features aren't the point here, but they're certainly a future possibility (as discussed here last year with a motorcycle safety accessory[1]).
[0]: https://www.youtube.com/watch?v=C_r5UJrxcck [1]: https://news.ycombinator.com/item?id=27054629
>no non-electric cars are allowed
etc
In this case though, only laws and regulation can protect consumers from crass corporate greed.
Competition should be the way out of those anti-consumer behaviours but these are very difficult markets to compete in (as Microsoft and Nokia found out for mobiles).