Sounds like a children story about not making a deal with the Devil?

The implied part the children already know from other stories is:

The magic elves have a recorded history of laughing at their customers when they are on the toilette, hitting on their husbands/wifes and misleading their children into worshipping the elvendom and wander off into the forest.

The story ends in some sort of catharsis for the protagonist when the elves go one step too far. In the happy ending variant Disney makes a version off it is not too late.

I don't disagree, but history shows that people (and businesses!) can and will make such trades. Look at the privacy nightmare, and it's not just individuals. Large companies put all their Crown Jewels into things like Google Drive, gmail, Dropbox, OneDrive, etc. Even governments do this. The only payoff is convenience. That's how little people and even businesses value their privacy.