Personallly, as a early Evernote User, once One Note came out for Mac, I switched. And then getting a job somewhere where we used Windows PCs, just solidified it for me, and I never found the need to go back.
I promptly used the free "Recommend to a friend" 1 month trial to recover my note and used the importer to move everything to OneNote and I haven't looked back since.
If this just worked, if they could just make it so I can copy a bulleted list in Evernote and paste it somewhere else without the formatting going bananas, I would have stuck with it.
It's meant for drawing and rich media, so you can type notes and draw/paint in the same document. And for that particular use case, if you own a Surface Pen or such it is kind of nice to use.
But I suspect the majority of people in OneNote just need to type out notes. I agree with you, and I wish OneNote had some concept of a "typed-only" note, that did away with the weird textboxing-layouting stuff.
Evernote never seemed to evolve either. It was the same product 5 years ago, as it was last year and the company employed hundreds of developers - doing what?
Switching between mobile and desktop devices means the content doesn't fit on either because it the form factors are so different.
I think they special case the mobile product to act like a traditional text editor when there is a single text field. But it is a kludge on top of a broken model.
With a notebook, it's so much faster. You take it out, and you start writing. And at the end of the day, I manually add my notes to OneNote.