The biggest issue with EV adoption will be access to home charging. If you can charge at home, battery and power is more than already solved.
And if you can’t charge at home, no amount of battery can really solve that problem.
When the battery starts losing capacity, a larger battery will still have more miles, for longer, than a smaller one. The length of the trip has nothing to do with it, btw, only the total amount of miles driven in the expected lifetime of the vehicle.
The second biggest cost factor in an EV is the electric drivetrain.
As a customer, I want the manufacturer to spend the most amount of money on the parts of the car that get me from point A to point B (which are battery and drivetrain), not something frivolous like a $5000 car seat, when a $500 one is 99% as good.