You could say that cameras want to be free. A camera left unattended is likely to walk away.
Some rules are about adjusting incentives and disincentives to maximize value for everyone.
There is a lot of room to argue where that balance is. But the "its easy to copy stuff" argument isn't even grappling the kinds of context that result in more creations.
Most copyrighted material doesn't hurt you in any way if you can't have a copy. So someone creating something and not sharing with you should not be something to complain about.
Nor should it be a problem if they are willing to share with you, if you do something for them.
You are also completely unfettered to create anything for yourself that you feel you are missing.
People don't owe other people their work.