I'm pretty sure every Nissan dealer that sells a leaf must operate a charging station. Granted they're not as easy to access at the supercharger network... but it exists.
Plus, what about the Bolt, Volt, i3, Soul EV, or any number of other EVs? They wouldn't be comfortable or possibly even welcome at a Nissan dealership to charge.
Only teslas can charge on the supercharger network afaik. And, Nissan dealers will let other manufacturers car's charge if you pay, ymmv but it happens.
Listen, I'm not defending Nissan's setup, I'm just countering the point that there's only the supercharger network.
Where I live we have 2 Nissan dealers and zero Supercharging stations.
First, I said they're not as accessible.
Second, not all journeys are between cities. In fact...
For normal usage you charge at home.
Not everyone lives in a house with dedicated electrical outlets.