The "paywalled workshop manual" requirements are common to every manufacturer. The only reason service manuals are available for free online for other modern cars is that they're ripped from the manufacturer's pay portal, not that the manufacturer is supplying them out of the goodness of their hearts. And the service prices are pretty much in line with other luxury cars at the price point.
Not that that really defends Tesla, though. Cutting off an owner from dealer parts supply because their car is salvaged is unprecedented as far as I know. And the cutthroat attitude that every part of the car is a trade secret is ridiculous.
I think the biggest challenge for Tesla when they release the Model 3 will be scaling up their service network while scaling down costs. $70,000 car owners are generally willing to pay $400-$800 every few years for a dealer service. $30,000 car owners aren't. And for most manufacturers, scaling dealer service is a franchise : they need to supply parts, training, and certification, not a whole service department. For Tesla, it's a brave entry into a challenging core business.