There are a lot less paper than there used to be or could be. But paper is still cheap and of course there are legal reasons for using paper for legal documents/etc.

But ask the people in the printing presses, wood mills, etc how "paper" is doing. Just because it isn't gone doesn't mean that there are headwinds for paper.

People used to say the same thing about pay phones. Cellular phones will never replace pay phones/etc. Look how quickly they disappeared.

But I agree, paper is going to be around for a while, but its usage is in decline.