What is the main practical selling point of a model 3 over, say, a leaf? Longer range and that's it? Good thing tesla has a lot of vertical investment in batteries. The market is very competitive.
Much better value, larger size, better fuel economy, more conventional, more power, more range, and superchargers.
Cost per mile of range: $200 for the 2018 leaf, 132 for the Model 3. 147 hp vs 258 hp, 10" of extra length and 6" of extra width, over twice the range at less than half the capacity.
The Tesla is way superior to any other electric car on the road. The supercharger alone makes it the obvious buy for almost all consumers.