Once objects stop resembling real-life counterparts people tend to expect more of them.
You don’t expect much from a notepad. Just scribble in it. That is why Notes in iOS were OK to just support writing.
But as soon as it looses the original look (take notepad example), people want it to do more, at least as much as other digital text editors do. Suddenly you will want to embed images, videos, slideshows, music etc.
If the product or object are presented in the very minimalistic form, consumers might just expect them to be magical.