It's been pointed out time and time again in this thread:Their stance, so far as I can discern a coherent argument, is, "I was here first and that is more important than my need compared to the needs of others. Even if i don't need the charge and my use of a limited resource means others cant use it when they do truly need it, i dont care. "
That argument is selfish. It would be better to have a culture of sharing where the potential needs of others inform our own actions. Selfish people don't do that.
In general sharing is the right thing to do. Users who arrive first should be judicious as to if they need to charge at all, and if they do then make efforts to free up the resource for the next guy as soon as practical.
That's balanced with the sentiment that you don't know the "what's practical" part for other folks, so don't assume you are entitled to just "take" it.
No doubt there will be abusers and corner cases. Such is life with "people".