And now, among other things, Google is losing power users. They shouldn't forget that they gained popularity in the beginning by word of mouth which in this industry literally means: by power users' recommendations to others. It's the power user who would (or wouldn't) be replacing Bing with Google on his family member's new laptop.
This is crucial in my opinion: don't try to guess what people want to find, just guess how they want to be looking for something - anything.