Tesla was and remains a luxury car. I don't think the Model 3 changed that. It's competition for BMW or Mercedes, not Toyota. Luxury vehicles are notorious for their long-term dealer driven maintenance costs. What Tesla has over its luxury competition is likely more reliability and less of those costs. But the same "you have to get it done at the dealer and it's gonna milk you bigtime" philosophy seems to prevail.

I don't think it's intrinsic to EVs, is what I'm saying. But more to how Tesla has positioned themselves re: market segment.

e.g. the Chevy Volt is now in its 10th year and only now are people starting to have real difficulties with gen-1 10 year old Volts and battery packs and getting GM to service and replace them. Prior to that it was just smooth sailing. Most are not seeing serious degradation and the warranty has been excellent on them up to 8 years or so. A third party market is building up around older Volt battery servicing in some cities, despite not many Volts having been sold.

I think it's entirely feasible we will see the equivalent of a fully electric Toyota Corolla in the next 5-10 years. I don't think Toyota will make it though.