I think if any manufacturer was to ensure only reputable dealers sold their bikes and had a flexible warranty service that could be used in any, and was supported by training the staff, followed up by speedy repairs, then they could be onto a winner, it would be a great selling point, peace of mind!
My experience of the power of Mercedes certainly made me appreciate the brand I bought into, I guess having never had an eBike before and buying it from a car dealer you tend to think like a car buyer, going into Halfords or wherever, warranty and potential future problems are probably at the back of your mind, but as has been stated these are not cheap machines.
I am all ears and ready to buy another bike so will be watching this thread.