Apple’s change-of-heart was sudden, but any reasonable reading of the approval guidelines prior to the rejection would indicate AppGratis had shaky foundations.
AppGratis executives must have known their business was a risk. This isn’t necessarily bad, as long as you have the foresight to embrace the inevitable when it happens. Exploit the short-term profitability for as long as possible, and then instantly move on when necessary.
In reality, they have just whined to the press and begged their ‘loyal fans’ to sign a worthless petition.