I think the difference is that in the past, companies expected to be punished for obviously evil behavior, but now, they know they can go very far. Toyota got punished for stuck accelerators. Would they get punished for the same thing today? Tesla had stuck accelerators and we all forgot about it.

They're still pushing the boundary today. The Ring Superbowl ad where they announced they're watching you (but they said "your dog") 24/7 apparently got a lot of people to quit Ring, and you know they're crunching the numbers to see if the retention rate is worth the extra surveillance collection.

They charge for the diagnostic systems. Bigly. For example, Mercedes-Benz's Star Diagnostic System (SDS) is necessary for a variety of repairs and diagnostic procedures. There are varying degrees of workarounds and alternatives but none of them work quite right, or for every model/year/variant. It's not just the embedded system, it's also the interface to it. That's where the really ugly rent seeking crops up. And that's precisely why a tractor with no computers is attractive--not because the embedded software might try to ransom itself (although that's a reasonable fear) but because some horrible rent seeking corporate functionary will do their utmost to cheat you (or your mechanic) out of as much money as possible when it comes time to do any maintenance or diagnostic testing. No computers means that little bastard can fuck right off.