The idea that an ebook has more utility than a real book is hardly uncontroversial. You can't read it without the appropriate technology and a power source, it can't be easily lent to another person, can't be resold, and lacks all of the physical qualities that make a well-designed book readable, such as paper quality and typography.
The advantages of ebooks are that they are easier to carry, can be purchased instantly without a trip to the store, and are never out of stock.
It's the convenience of ordering that has made them popular, but customers aren't idiots. They know that printing, binding, shipping and storing books is expensive, and that those costs are reflected in the price. When you remove all of those elements, they expect the price to go down as well.
How is that so hard to understand?