Subaru disabled their telematics system in Massachusetts rather than comply with the state law requiring they give access to independent mechanics. They are incredibly petty.
Never ascribe to pettiness that which is adequately explained by laziness.
As anyone who has built internal infrastructure knows, giving a third party access to a system never designed for third party access isn’t always trivial. Even if the tech is up to scratch, there would still be a need to audit the system top to bottom. Documentation will need to be checked and improved.
Disabling a feature for a tiny number of customers is, by comparison, extremely simple.
Now that we have the MA law, how come CA doesn't have something similar ? Is there something in the works ? Usually, CA is at the forefront of vehicle compliance laws.