[onion2k]

This way, wealthy consumers effectively subsidize hardware for less wealthy consumers.

That's not how this works. Everyone who buys the car is paying for the feature equally. All of the cost of the R&D, the materials, the labor to build the feature in your car, that's all in the price you pay to buy the car. The subscription is entirely an additional cost to use the feature you've paid for. Mercedes are not discounting the car for everyone and then making the discount back from subscriptions. They're nerfing the car and then charging people to unnerf it.