The analogy is crap.
Let me make it worse: You're the only store around for miles and miles and people really just buy what you've got in stock. Sure, they could order online or grow something in their backyards. Maybe there's this obscure and small outlet for some of the missing things from your inventory, but most customers don't know the place.
But you just decided to remove meat from your store now. You consider eating meat distasteful and barbaric and really want to have nothing to do with that sort of stuff.
In my book you'd be
- abusive in your position as a quasi-monopoly
- an asshole by forcing your morale standards on others
I think that's a good point the GP makes. I don't give a damn what the weirdo moral limits are in the US. They are totally insane if you have my upbringing.
If you want to police the market, add proper age restrictions. Or use this braindead misfeature of regional support and don't allow apps like this in the US (now that would be a change, eh?).