What I have noticed having seen a lot of startup apps (200-300) is that most of them are “flat”, “moss-like” with no advanced features. That is big disadvantage to advanced users but they just happen to survive better than supergood apps not released in time. And… even after maturing, they just keep things simple (a polite word), look at Evernote for notes or Basecamp for PM… Would you compare these apps to humans, rabbits, mice, flowers or simple moss? Even facebook is moss - its skeleton is very simple, it is just massively online communication platform, nothing fancy.
It is good for startup pockets, it is easy for users who still like to chat but where are the all technological advances we have been promised in sci-fi? I think current time will be remembered as “dark ages of software development” unless each of us will do something about it.
Another hypothesis is we have just reached the limit of human potential of handling GUI and time has come for bots and robots.