If I had a gas pump in my garage, then I'd concede the point. But on average I have about half a tank in my ICE, so I'll still need to stop and refuel on a trip over 200 miles.
But I nitpick -- the key point is that any EV manufacturer is balancing four design parameters:
- Energy stored
- Battery weight
- Battery size
- Battery cost
The first is a 'good' and the other three 'bad'. Elon already said that they could have made the Model S with a larger battery, but in balancing these factors, Tesla concluded that (at the time) the 85kWh size was the sweet spot. As battery cost falls and energy density rises, the sweet spot will migrate to a higher point. Tesla will at some point drop the 60kWh (a careful reading of Tesla's comments about the Model X indicate that there will be no 60kWh version of that vehicle), and then introduce a new battery with the same footprint but higher energy stored. And they'll make a lot of money selling these new packs to existing owners.
I don't think that many ICE buyers think much about the gas-tank sizes on competing models. Why? Because refueling is fairly fast. As Superchargers become more ubiquitous, I think there'll also much less concern about super-long-range EVs.