A - fully-electric cars are still too early and will get crushed by hybrids or more efficient diesel/fossil fuel cars. Tesla becomes irrelevent.
B - fully-electric is all the rage, and every brand will have one. Tesla will become the victims of their own success.
I'm going to assume many of you are going to disagree with me. Mainly because we come from a world with a much different customer acquisition models.
For most people, if they had a choice they would buy a trusted car brand. Would you buy an Honda/Acura, Toyota/Lexus, Mercedes, etc with dealership in every corner or an unknown car called tesla? Also, unlike niche companies like Ferrari/Lamborghini that have brand and performance appeal, tesla doesn't provide anything unique. For the same price point, there are far better cars, than the original lotus-based Tesla. To that point, what's their beachhead?