I agree that many of the features they were adding were useless (to me), but I disagree that you can encompass what they do with the description of storing and editing files. Their value was in the removing any concern a user might have about where a note is, both in terms of which device, and where on the device. There are a bunch of ways to sync and edit files, but I don't want to spend time or brain power on that, I want to capture bits of information and then be able to find it again without thinking about it. What I was buying was simplicity, reliability, ubiquity, and speed. They screwed up because they didn't seem to realize that was their core value proposition.