If you rent a vehicle out for $75 per day, and it needs a $1000 repair, and a repair takes 2 weeks, the loss of use is more expensive than the entire repair!
Repair times have been getting longer across the entire automotive industry, as parts availability hasn't been great, but Tesla vehicles are notorious for long wait times for parts availability and availability of the specialized labor sometimes required.
When Ford started making putting aluminum bodies on their F150s, they had special training programs for doing bodywork and repair on them. I guarantee that cost was passed down to you.
It may not even take longer to do the repairs, it might take the same amount of time once you learn how to work on them. That said, I guarantee the shops and insurance companies are recuperating the costs of that extra training.