And it's a bit early to be taking about how fantastic Tesla's cash flow situation is when they have been losing so much money in recent years. And they have so much cash locked up in a Supercharger network that has a questionable future (proprietary standard, embrace/extend model, no interest from other automakers).
I have a 2004 SUV with a 7" satnav in it and some god-awful software package. Does Acura offer an upgrade path for this? Other than a way to update the roads database, no. Buy a new SUV.
Neither does my iPhone 1. Lets hold off on this comparison until Tesla is still supporting 11 year old vehicles.
I've owned a number of cars for which I would have spent thousands of dollars with the brand upgrading them if options were available.
Almost every single car part can be "upgraded", courtesy of the aftermarket. It's not necessarily a worse system.
According to Wikipedia[1] Ford is the only one of the big three Detroit manufacturers to still have it's own financing arm. As you noted, GMAC spun off into Ally, and Chrysler Financial was bought by TD Bank.