Because bottom feeding is not a strategy that's fun for anyone but the select few on top?
And games need to be fun to succeed on a large scale?
So, since the new owners want to make the game bigger again, they need to do something about the not-so-fun aspects of it?
Actually - no, I do not.
My last land attack was against someone 110% my own NW and 83% my KD-NW. Pretty much all other land gains were made in war, so far.
Plunders and Abducts were also in very similar NW-ranges to maximise gains per attack and minimize return times.
TL;DR: I do as I preach.