That seems anecdotally accurate to me. It's not hard to find "spiritual sequel" Mac and iOS apps that do quite well as people switch to them from older apps tha

That seems anecdotally accurate to me. It's not hard to find "spiritual sequel" Mac and iOS apps that do quite well as people switch to them from older apps that are lacking in development or aren't as "cool" anymore, such as Cyberduck -> Transmit, iSSH -> vSSH, BBEdit -> TextMate -> Sublime Text -> Atom, and so on.