The lack of a low end scanner market could also be attributed to the fact that everyone these days has a device with a camera that is either good enough or in some cases better for digitizing documents than those old scanners.
Yeah it might randomly decide to swap out a few words, sentences, and numbers, but it looks really good!
The app iScanner really does work very well. The glare and shadow issues are trivial to solve with good CV these days, the resulting documents are pretty damn close to a hardware scan.
I had to fill out a bunch of forms when I transferred my car to the US, and everyone along the way seemed perfectly happy with photo scans.