That doesn't sound all that unreasonable, at first. Auto repair business average between $250K-$500K in annual revenue, but average annual profit might only be $100K. I suspect many that repair domestic ICE vehicles don't bother with subscriptions and rely on the experience of their mechanics. There must be some threshold of Tesla repair customers to make a subscription worthwhile. Though, I live on the East Coast, rural setting, but I have travelled from PA to FL more than a few times since 2019, and it just occurred to me that I have never seen a Tesla in the wild.
Selling an item, then selling the repair manual to that item, isn't unreasonable - it's an insult to your customers, and only a few steps removed from extortion. It's the manufacturer saying "I want to use technical means to control how you can use the item, even after you've bought it - and by extension, to control you."
I hope the right to repair movement makes this practice illegal.
I am excited for Hyundai and Kia's EV vehicles with their insane warranties and third party support.