Everyone copies the Google look and feel. Compare:
It's a world of light grey, green, blue and Arial. It's like the 70's when every house had avocado colored appliances. Or more accurately, it's like when Windows started taking over and everyone copied their style guide.
In the end, it's probably good for the user - since everything is standardized. But it'd be nice if someone came up with something fresh. Eventually, all those 70's kitchens got refreshed to have that Tuscany feel didn't they?