Imagine going to Shakespear and saying "Sure we will publish your plays, but every person who buys a copy will get a different version where we change the words and the cadence a bit."
Buy a copy of a play for every actor, all of them have minor variations which cause massive confusion.
Hell, change the Bible randomly; that wouldn't get noticed at all.
Books are not plays. What words you read don't really have an effect on what words others read from the same book.
Though this would affect grade schoolers' English classes reading from books out loud. I wonder how many kids will get falsely diagnosed with dyslexia because they were reading "Jim and Steve" when everyone else's books read "Steve and Jim".