I guess they do it because they can. According to their twitter page we received our funds triple before august 1st :) If they think about future customer relationsships? There won't be many hardforks within the next years where you have the chance to fuck up like this bigtime. I believe the word will be spread after August 1st and the amount of new contracts will drop rapidly. It remains to be seen if and how long they will stay online...
RE: Genesis Mining Fraud - Payouts delayed to rip off customers Bitcoin Cash on 1st of August