[THEORY] ALL DAY Battery Life = The END of the Coffee Shop
I can't prove this, so we'll just have to wait to see when it happens decades from now.
I don't go to coffee shops for internet access, their speeds are so slow I am better off using my phones internet for fast access. I go because of the wall socket. Power. There my finite and fickle laptop battery won't be drained leaving me unconnected. But what happens when we get all day battery life? I think the coffee shop population will wither to a fraction of its current numbers.
How many people hang out in a coffee shop for the ambiance alone? Just there to chat or sip lattes or read books?