Just took a look at the MA Right to Repair law and it only mandates that manufacturers shall make available for purchase by owners :
"the same diagnostic and repair information, including repair technical updates, that such manufacturer makes available to its dealers through the manufacturer's internet-based diagnostic and repair information system or other electronically accessible manufacturer's repair information system."
and...
"all diagnostic repair tools incorporating the same diagnostic, repair and wireless capabilities that such manufacturer makes available to its dealers."
Unfortunately it doesn't say anything about guaranteeing the right of owners to purchase the actual PARTS needed to make any repairs after diagnosing them via all this information & tools.
Tesla may actually have another loophole here to skirt even the existing requirements, but I don't want to spell it out publicly and make things worse. Incidentally, the original MA Right to Repair ballot initiative passed with 86% of the vote. That is a HUGE number for a ballot initiative as I'm currently involved in the MA campaign to Vote YES on 3! to prevent cruelty to farm animals.
Here is a link to the full text of the MA Right to Repair law in case anyone wants to read it directly.
They met this requirement by allowing MA residents to download the service manual, however they skirted around the fact that we do not have the repair and diagnostic tools that the dealers have to properly repair the vehicles.
Hmmmm may be something to look into.