I wonder how much of this is also due to poor impulse control. People with stronger impulse control are more likely to charge their phones fully beforehand, and

I wonder how much of this is also due to poor impulse control. People with stronger impulse control are more likely to charge their phones fully beforehand, and/or minimize their usage of it, so as to keep their charge at a healthy level. Such people are also less likely to accept higher surge prices, and choose alternatives that are cheaper but less convenient.