Once it eventualy becomes free, then you just need to start selling it for -$0.01, -$0.02, etc (giving money along with the genie bottle). Essentialy everyone continues paying a single cent for the use of the genie who fufills all your desires.. not a bad deal, especialy since in some countries a loaf of bread costs 50,000 basic monetary units, and one of your desires is undoubtedly that you'd like a good deal of money.