I can't email notes into Obsidian. Obsidian doesn't have a web clipper, note reminders, markup tools. I mean sure, I could cover some of that with plug-ins, but at a certain point things become inconvenient.
For text-only notes Obsidian is great. For web clips, emailing notes in, multimedia, I just find EN much easier than trying to jam everything into a text editor.
I don’t care about any of those features. I care about capturing and organizing ideas that are almost always text.
It’s cool you like EN but I think that market is much smaller and EN was just reaching for super edge cases to please a few users and trying to get “regular” users to pay as well.
I do use Obsidian for text notes that are of my own making, but for pulling in media and other file types, I find a tool like EN so much easier to use.
Furthermore, FOSS is orthogonal to support and usability. It's a meaningless property on its own.
I like open source a lot, but for my data I much prefer interoperable. I've watched too many projects and companies die and take my stuff with them.
But on it's own keep gives me everything I need, except for the local markdown file database.