While right now you need to put children and teenagers through years of rigorous training and expose them to immense stress and pressure so most of them break
Uh... I don't think that's a necessary part of the process to making k-pop, or any kind of music. Industry people may think it's critical to making themselves shit-loads of money, but it's not important for the creation music or even selling the music.
But if the flat earth goes on, what can be assumed to be, infinitely past the ice wall (since no one really gives an answer for what's past there), think of how big maps would be! They would have to sell giant maps and make a fortune.