Also just because something isn't #1, that doesn't mean it's a bad acquisition. I don't know enough about the details of this to comment, but just because FitBit isn't the biggest thing in wearables doesn't mean it's a stupid acquisition target.

If Apple wanted to sell the Apple Watch for $2 Trillion dollars, that would obviously be a terrible acquisition. If Google bought FitBit for $2000, that would obviously be an awesome acquisition.