The miners now competition is fierce, income is not very high.
Of course...network power has more than doubled recently
NetHash is around 28GH. Thats only around 9-10 GH of scrypt hashpower.
So all i understand is that the reward goes down with higher diffculty. If reward goes down and you have to share
it with more users your reward is going down much more than on coins that don´t use dgw.
On current reward and powercost of my mining rig i can buy x2 more coins than mining them.
There should be not a lot of countries in EU you can mine DRK cheaper than buy them.