Storing a verbatim copy and using it for commercial purposes already breaks a lot of copyright terms, even if you don't distribute the text further.

The exceptions you're thinking about are usually made for personal use, or for limited use, like your browser obtaining a copy of the text on a page temporarily so you can read it. The licensing on most websites doesn't grant you any additional rights beyond that — nevermind the licensing of books and other stuff they've got in there.