[ajsalminen]

The common refrain in recent years has been that Drupal has been going for the enterprise instead of every single blogger like it used to. That could decrease search volume while still even growing in that segment.

Still, having both would obviously be better if somewhat difficult. Drupal hasn't completely given up on that idea but the trend has definitely been towards more about serving developers than a layperson who wants to set up a small website.

That's not to say everything necessarily is fine since Drupal 8's adoption has been slower than for previous versions but it looks like it may be finally picking up. The recent announcement that major Drupal versions will no longer be big backwards-compatibility breaks like they've been up until this point is something that could really help it too.