My point of view is if you can't deliver new features you become the incumbent and new player will replicate those features with lower cost or better execution. Also, the ball is moving: newer apps are heavy on features like backlinking that could not be delivered with the glacial release cycles of the "good old Evernote".

I understand that EN is still the best on being the ultimate digital repository, but as a "digital brain" the market has slightly moved towards the PKM space (see Obsidian, Notion, and so on).