One of my guess is that "applization"(I mean a web service becomes more and more like an app) has its role to play in current simple/clean/flat web design trend

One of my guess is that "applization"(I mean a web service becomes more and more like an app) has its role to play in current simple/clean/flat web design trend. A more app-like web service is more likely to require the app visual design. So this could be an interesting perspective to examine the development status of web design in different parts of the world.