Could be an insurance reason too. They new owner might have to sign some type of waivers, there could be an ongoing cost to running the software etc etc etc. It is not really a black and white issue as autopilot is still not legal everywhere, and these cars haven't been given the green light.

Consumerism sucks and paying for stuff twice sucks, but I have a feeling there's more to it than just plain greed, even if we know that exists.