Well there are two mildly better twists to his wishes you could play on. That both play on that.

Asking for unlimited wealth without clarifying or asking the origin of said wealth is a foolish act. John could be given a magical bank account that is linked too all accounts across the world. Whenever he uses this account it pulls money from random sources. Pulling money from world governments, crime organizations, billionaires, you name it his account can pull money directly from it and into his own.

The caveat is that this action is not done covertly at all so these people can look at their bank statement and see withdrawals from their accounts going directly to this guy name John something or other. Within a week John becomes the most wanted man in the world. Cartels wanting to murder him, governments wanting to apprehend him, oganizations wanting to capture him to learn how to managed to hack into all these accounts for their own personal gain.

He'll need every ounce of his charisma to survive being the worlds most hunted man.

On the flip side the reason this works is because he specifically requests to suffer no consequences for his ACTIONS. But inaction can have their consequences too. Its not just the things we do that have an effect on the world around us but also the things we choose NOT to do.

If I had to end this the story would end with John getting to live a few months or years with his newfound ease of living only to suddenly wake up in a dark room, tied naked to some kind of table. Standing over him is his ex-wife asking a dark figure in the room "Are you sure he won't die no matter what I do?" the figure reassures her "He will not die, he will not loose consciousness, he will feel everything you want him to feel and possibly more I imagine..."

The voice of the figure is familiar, it is that of the genie. The very same that granted him his wishes. He askes what is going on, he pleads with his wife using his supernatural charm...but like the genie she too knows who he truly is and her eyes hold no mercy in the tears that fall down her face. He is greeted with silence, the light clank of small metal objects... surgical tools... she looks up at him and smiles. A quiet but immense rage hidden in her soft expression.

"I'm going to cut you open John. Every surgery, every procedure our child had to endure without you, every medical intervention that could have saved his life..... I'm going to show you...You're going to see... you're going to feel...."

The scalpel pressed against the middle of his chest... she preseed hard but not hard enough. The dark figure speaking out from the shadows....

"That won't cut through the bone Alice, you have to use the saw..." The woman mutter a soft "Oh..." as she nodded to tone as casual as if she just realized she forgt her keys.

John them screams to the genie. "You liar... she can't do this.... you said I wouldn't suffer any consequences! She can't do this! You can't let her... you we agreed to no consequences...."

"For your actions." the genie interrupted. "Your actions John. The things you choose to do. But there are consequences for the things you choose NOT to do. For every time you chose not to tell the true, for every time you could have told your child you loved him, for everytime you could have consoled or comforted, for even with your infinite wealth not a penny was spared for your family... You didn't tell the true, you didn't love, you didn't console, you didn't help....those have consequences too John..."

The genie's voice was cold emotionless. Everything in the room was still, too still... a stillness broken by the revving of the bonesaw as its steel toothed wheel started to spin. A sound soon drowned out by his screaming, frantic, bloody, panicked, pained. Inhuman sounds coming from his body as they both just watched. He could feel his mind fog and cloud with pain but his consciousness never waivered.

She paused as the blade got caught. Panting and whimpering he pleaded her to stop, he begged, he apologized maybe for the first time in his life he truthfully and honestly apologized. But it fell on def ears as the saw started again.