What makes you feel entitled to the content of the publisher before the copyright expires? Do you feel that you deserve access to everything because you've deemed the concept of ownership around book publishing immoral?
You can't just take a digital copy of a physical book and give it to everyone worldwide. That isn't your choice or decision to make nor is it ethical to ascribe malice to simply retaining distribution rights to content they own.
"Make publishers richer", it's actually just honoring the concept of ownership...